Earlier quoted context omitted.
i'm on board with this. Just a big "ignore" button where i never see the person's content or any interactions with it again would work just fine for me. I think to provide feedback the other way a counter on your view of the number of people that have you on ignore would be good too.
You would spend your days blocking people, and not much else.
It's not perfect, and there's a very real concern that spam filters are becoming increasingly biased, but (to my knowledge) the level of outrage around spam filters is much MUCH lower than that around platform "censorship". It's a stable equilibrium.