[Eisenstein]

You can block users that block you -- if you know their username. But you don't know who has blocked you, and if they block you, you don't get to see their posts any more/

And you wouldn't notice if anyone blocked you -- that's the whole point -- but entire posts and threads could be right under your nose and hidden.

Regardless of whether it affects you or not -- it is ill conceived, does not accomplish its stated goal, and is easily abused by bad actors and thus should be heavily revised or removed.