I am a bit confused. The post you responded to was about constructs and you are not with me on those ones? Your threshold is at fantasies as it seems. I guess "genuine feature of existence" is not synonym with "objectively existing". Or do you argue that constructs do objectively exist?
You must have misread the post. I agreed with you.
A lot of things objectively exist. "Constructs"... "physical objects"... "quantum fields"... "mathematical truths." Some things land BOTH in the category of "things that are real" and "things that aren't physical objects"-- which is the realist position. But I did not imply that physical objects that really are there somehow don't exist. Physical objects exist objectively. Any realist will tell you that. In fact, it's usually premise 1 for any argument for realism.
I don't have a "threshold at fantasies." Some things DO exist. Other things do not. That's the basic foundation for realism. Nominalists. on the other hand, have no criteria for things that exist.
They say all we are doing is "naming" things. And there is no reality behind those names, except what we "imagine" to be real. I disagree with them.
Yes, sometimes, some things only exist because we've named them. Like when we imagine a magical horse with a horn protruding from its head. But other times, we think of things like GDP of a nation. And this example describes something that is a real feature of the world, even though some folks take it to be some airy-fairy conception that we make after taking a couple of dabs. That couldn't be farther from the truth. GDP is a genuine feature of human reality, whether it has physical properties or not.