[Jordrok]

> In what other public, online discussion forum format can anybody without admin powers, arbitrarily and unilaterally ban others from publicly replying to public posts? That idea sounds insane to me.

Regardless of all your other arguments here, the change being made to twitter here does nothing to prevent that. Blocking a user still prevents them from interacting with your posts in any way. Now they can just see the post without being able to reply to it. So I'm not exactly sure what your point is.