Artist Jingna Zhang built Cara, a platform explicitly intended to protect artists from having their art stolen by AI...and yet these people just won't leave them well enough alone.
It's kind of an intractable problem though. The more "protected" the art is, aka restricted from the public, the harder it is to actually show human beings.
I think the only practical solution would be "prints only." Archive the digital copy, display the prints in museums... not to replicate Instagram.