I think you misunderstand, but I didn't really specify either so it's on me.

Take the guy who trained a model off Kim Jung Gee as a "tribute" after his passing, then demanded he get credit if anyone should use his model.

There's alot that goes into an act like that which a complete layman isn't going to be able to grasp, and thus I truly do believe he didn't actually realize how much of a vile slap in the face that is.

Keep in mind, something like that would be similar to me, an artist/programmer who failed algebra 5 times, trying to make an equation in honor of Stephen Hawking's death in a single afternoon. I'm missing the point of his work, what made his work so impressive and important, and the work I produce isn't even gonna be any good. Then, I go out and say "if anyone wants to use this shitty function I put together feel free, but make sure you properly credit me!" There's aspects to the entire culture of science and math and physics that I've completely sidestepped so I can promote my own vanity project.

That is what I mean by "non artists invading the space"

People adopting the language of art and trying to leech the same cultural components of it while taking an at best incorrect angle to it, or at worst, a lazy and disrespectful one.