When the only option to decline is "don't use our service" and/or "delete everything you've uploaded before AI even existed", then there's no consent and it shouldn't be legal. Especially when thousands of artists who uploaded have died before AI existed.
He-Man is never going to keep a proper foothold in popular culture until they suck it up and make a version of him gay. I know this because they made a She-Ra gay and now I willingly chose to remember there’s a character out there named Netossa