I'm not interested in a perfectly flat world. I disagree that a unitary canon will emerge on its own. I don't object to individuals saying, "I like X, maybe you will too." What I object to is the use of power to create and maintain status hierarchies.

I also think it's ridiculous to suggest that lack of an imposed canon will end cultural references. When I look at social media, I see a carnival of reference. Things still become widely seen, widely heard.

And if your dark fantasy came true, so what? That would mean that each person has found art that is more meaningful to them than whatever was previously being imposed as important, and found community with that "tiny fraction" of others who found the same things valuable. Should they required to spend time on things they like less?