To be clear, “having the right to do whatever they want” does not equal “they’re not dickbags for doing it.”
Musk randomly decided to rebrand and stole a username he liked from someone because he’s an asshole playing at feudal lord. Sure, there’s no legal repercussions because it is his website. Doesn’t mean he’s not a fucking douche for doing it.
Also the “people these days aren’t going to want to make art unless they can commercialize it” sentiment.
For as long as there has been art, doomsayers have been complaining that they’ve lived through the last of it to be produced.