Except all those people performatively declaring their refusal to comment on forums and write blog posts, they're not actually making their money this way. LLMs take away nothing from them, except maybe inflated sense of uniqueness.

I can understand why all kinds of artists, who make money from their creative work, have an issue with generative models. But I feel this is unavoidable - graphics and writing and video creation will follow the same path music already did decades above. For a long time now, bands and singers don't make their living through their songs and recordings. They make it through live performances and branded merch, and related things. Music is too cheap to meter, but human connection isn't, which is why musicians make money by being entertainers. This is the fate that awaits other creative arts too.

The artists who don't mind not making money from their work itself, have built a personal brand to obtain other sources of income. But the future that the OP describes, and which feels quite believable, is one where AI defeats humans even at building a monetized brand around obtained content, so there isn't anything left for humans. I am much less optimistic than you that people will demand human connection, I think they will be satisfied with a convincing enough simulacrum.