If people found out you commissioned the painting that you later told everyone at the party that you painted yourself, and that it is practically your work of art, because you gave the precise description of what you wanted to the painter, and thus you're an artist.

"The best person who ever painted spots for me was Rachel. She’s brilliant – absolutely fucking brilliant,” Damien Hirst said. “The best spot painting you can have by me is one painted by her”.

It's not the difference you think it is. Lots of people who use AI art generators don't call themselves artists either. I certainly don't, because I don't care whether I'm called an artist. I just want the art.

I think you may be generalizing a stereotype.