Then you admit that you can not discern the difference between ideas you merely imagined from ideas you subjectively believe to be true? That faith, or wishful thinking, is your only means for deciding what you deem to be real?
This doesn't follow from what you quoted. I provided 4 ideas, about thinking, regarding plausible existence as to how understanding works. That you feel your ideas about thinking overcome assumptions / faith is interesting. You've done zero to show it, and instead use appeals to essentially false authority as attempt to overcome what is quite obvious a bias. All your assertions about 'me' (or your idea of me) are subjective conjecture.
As already explained, reality is defined as what is actually existent, and as existent independently of what is thought about it. Physical reality fits the bill.
It does not. You are not, thus far, showing this via reason. You are stating it, assuming it. You are not providing rationale to back up your assertions. You could just as well be saying, "2+2=5" and call that reality, that is objectively known. Asked to explain this, and you would resort to, because it is reality, and objectively known. That is how you are presenting your rationale thus far.
However unreal you might find elephants, when one steps on your toe there are bad and very real consequences to your toe. I'm sure it occurs to you what those consequences might entail because I am sure you understand that getting your toe stepped on by an elephant is a very real and painful phenomenon, which occurs independently from what you think about it.
Such a claim doesn't make sense. Not even a little bit. You are suggesting that pain (and my personal experience with it) is what establishes the phenomenon as independent from my thinking. What it would actually confirm is the subjective conjecture I assume to be true about me, is plausibly going to have certain, perceived real consequences about 'me.' Such that any pain experienced in a night dream would therefore be how we know all things within that dream are real and not fantasy. As that example continues to work with what you keep trying to make points with, it also shows that this continues to come back to perception of self, perception of 'observer' who is attempting to determine 'reality.' And thus far in all examples you've brought up, they are littered with idea, from human consciousness, about what is 'observable.' While ignoring the role that self perception is clearly playing in all your hypotheticals.
Claiming it to be unreal is to claim that you could experience no pain whatsoever in such a scenario with mental imagery perhaps, or that your toe could get out of that unscathed by the power of your mind (as in when controlling a dream), or a host of other things.
Depending on what you mean by "host of other things" then this would open up many avenues besides a) I perceive myself to be a body, or in a body and b) I will therefore feel what this body feels and c) there is no escape from pain other than what the physical existence provides as means to overcome illness / pain. By any measure, night dream or not, the pain will be temporary, so appearance of controlling that would be challenging to discern, I think (or know from past experience of thinking ultimate reality is physical) from the perspective that equates healing with physical occurrences (only). Could lose part of the body during this hypothetical you are bringing up. Lots of pain could then be experienced in the moment with self identifying with that body, all of which would be temporary. That, I'm sure you do not dispute, but unless your conjecture is going out on a limb, you'd know that healing will be from the mind foremost, and have ability to change / influence (I'd say determine) the physical recovery process. Such that all pain will eventually be controlled, read as eliminated.
For you to think that I have not contemplated the pain experience in my understandings of what is real and what is not is naive. Truly naive. As I sit here typing, I can double-check any discomforts my body is currently experiencing to see if what I felt as pain yesterday still has remnants of that today. I can recall a myriad of things related to each discomfort/feelings of pain from the physical existence I experience, as to 'how did this occur to me.' Some of that does matter to me, but not in way I believe you are trying to get across. For that I do not see as cause of the effect I am experiencing (discomfort). I honestly would have to go back to mindset I associate with ignorance for me to entertain pain at that level of understanding. I see the cause as clearly from my mind, and perception of myself. And everything about the sensation of pain/discomfort only confirms that, yet scapegoating via ignorance would perhaps have me entertain otherwise. That it's not me as cause, but something outside of me that did this to me. Or more like is continuing to have this experience of pain done to me. Honestly just writing "discomforts my body is currently experiencing" is ignorance in my book. Thought of changing that, but in explaining such things, it is perhaps better to start from place of assumed ignorance. Had I typed that up in way that makes more sense to me, I would've said, "As I perceive myself sitting here utilizing my body to type this, I am able to check on discomforts that my mind interprets as still occurring with my own physical existence." I do actually see that checking (and double-checking) as a way of controlling the pain. A poor way, but still a form of control, really.
Controlling the pain/discomfort is what is most pertinent to your hypothetical and my alluding to personal discomfort I am experiencing. Ultimately, I do see it as letting go to eliminate it. Along the way there may be a myriad of things I will try, all of which I do understand to be faith based (mind overcoming matter). Some of that could very much benefit from medical knowledge (i.e. doctor) to facilitate healing, but all of that would be based on faith, with regards to controlling pain. Faith with understanding would heal the pain. Faith with wisdom will eliminate it.
Wisdom on the front end would have likely avoided situation where elephant stepping on toe is the experience, but in the hypothetical, what need do we have for wisdom?
In short, in claiming that physical existence is unreal, you are claiming that physical existence is entirely dependent on the mind, which is demonstrably untrue.
You have yet to present anything that suggests otherwise.
And whose mind at that? Yours? Mine? Do you believe I am a figment of your imagination, "typing" back at you? That a phantom of your mind is reading this post right now, or typing a response to it? If I imagine a banana will appear in my hand, and if you simultaneously imagine an apple will appear in the same hand, which one appears? Or do both appear?
I would bet money than neither appears... not merely because we are thinking about them appearing, at least. Why not? Because unlike in a dream which depends on the mind alone, physical reality operates independently of our minds.
In a shared existence, it is clear that our individual minds are not what is governing consciousness. Instead, there is a higher consciousness at work, aka God. Or for those not able to make the self evident leap, we can go with intersubjectivity.