Lying to a person who you intend to date/sleep with, which includes withholding information, is unethical to do. It doesn't matter if it's lying about being STI free, being penis free or even that you're looking for a one night stand but pretend to want a serious relationship. That is a ****ty thing to do to a person. This expectation of being honest applies to EVERYONE. It IS normal in this day and age to answer questions pertaining to all sorts of.....err grey areas in life, shall we say?
I find this equivocation of date/sleep with to be most interesting. I'm wondering if celibate people could go on dates without ever making it known upfront that they have chosen celibacy? If someone felt attracted to a person that has chosen celibacy, and said, "would you be interested in going to dinner with me and catching Batman vs. Superman?" Would this person have to blurt out at this time, "I'm celibate!" Or would it be better to wait a little bit later like during an excruciatingly boring part of the movie, announce their celibacy, understanding that the only logical result of this evenings events are that they are going to sleep with each other?
I also find it interesting because I would think lots of people would be withholding lots of information on a wide array of things during a date. Seems like one would have to date for decades before sleeping together could occur, otherwise a partner could later claim that information was withheld from them when they first slept together. Many guys (not all of them) lie about their piggish tendencies and put on a good game face in order to get into bed with a partner. Lot of withholding of information there. May even manage to withhold that information up to, "I do" and perhaps later. I'm thinking the other partner may have not said, "I do," had that person not withheld that information. With every partner I've ever dated, and not stayed with over the long term, the break up seemed to have something to do with not being completely upfront with certain information. Because of my desire and what I fully believe to be mutual consenting desire to sleep together, I'm sure as heck glad this wasn't a bizarre standard which could of precluded us from sleeping with each other. But now I feel so unethical about all that information I withheld about me, my life and past experiences before we slept together. Suddenly, celibacy makes a lot more sense if this is the ethical norm.
Not to mention that one might actually be emotionally or even psychologically hurt by sleeping with a transgender unknowingly. They might feel extreme guilt if they are very religious and believe they have committed a grave sin in the eyes of whatever Deity they pray to. They might feel internalized homophobia and ashamed of themselves. So, while sleeping with a transsexual might not cause physical harm to anyone, it does put some people at risk of other things. What if they've been brainwashed by the Ex Gay crap and experience severe self loathing afterwards? The shame and guilt said person would be taught to feel would put them at risk of other psychological issues. Now, okay you could say that that's all on them. And I'd agree. But it's still a potential consequence nonetheless.
Agree it is a potential consequence. This would fit within the transphobic aspect of what OP was getting at. Like bigotry, transphobia isn't inherently all bad. Might have that sort of 'power' for some people to assert it as 'all bad, all the time,' but could also serve as a form of protection from which one would be saved levels of extreme discomfort based on the CHOICES they might make if those things did not exist. Their refusal to be with, work with, shower with, sleep with, eat with the group of people they are intolerant towards could be considered a self defense mechanism.
No one is saying you have to fill out a freaking questionnaire every time you're dating someone. But most people prefer to know exactly what type of person they are dating. Whether they're into BDSM or LARPING or even if they have no genitalia. A relationship/dating involves mutual consent. Consent can't be obtained if the person is not fully aware of exactly what they're entering into.
Being upfront with one's preferences or any issues before having sex is vastly preferable than to be shocked by some revelation of something later down the line. Whatever revelation that may be.
I don't believe, nor find, you can have it both ways. You can't say "no one is saying you have to fill out a freaking questionnaire every time you're dating" AND say "Lying to a person who
you intend to date/sleep with, which includes withholding information, is unethical to do," without this being diametrically opposed trains of thought. As this may be a matter of further debate, I'll be keenly interested in rebuttals to this.
If you (a presumably heterosexual male - HM) are attracted to a person who is a trans woman (TW), then who is that on? What does that attraction actually mean? Whatever it means, must the other person (trans woman) speak with complete openness about whom they are for you to feel comfortable for whatever next steps you may wish to take? I.E. - HM wants to ask TW "will you go out to dinner and a movie with me?" And TW is to understand that as, "they obviously want to touch my genitals and is the only rational way to understand that question, therefore I need to talk at great length right now about who I am, and how I came to be standing in this spot today before they met me?" Or would a simple response of, "Yes, I would like to go to dinner and a movie with you" be okay? Ethical? Once that yes response is given and they go out on this activity which might be called a date, would HM, who is presumably uncomfortable with dating people who have penises, have sufficient reason to blame the other person who has a penis, but withheld that information? If yes, please explain that. Cause, the way OP has set things up, there exists a refusal to date females with penises. But apparently, it is the females with penises who are entirely to blame for withholding information and the person (HM) holding the bigoted position, not so much. That information is okay to be withheld indefinitely. Cause, ya know, that's all fine and normal. Really just a matter of preferences.