Okay, I'm confused

Okay, here's what I'm not getting about the latest round of the warnings controversy. How, exactly, are the people who don't want to warn being oppressed by the people who want them to use warnings? It isn't like there's some magical fandom enforcement agency that can *make* them warn, is there?

You have a right not to warn for stuff, and other people have a right to call you a jerk.