@dj3ei @feditips @rysiek @thekitmalone but isn't that how personalised blocking of someone's user account on social media has always worked?

The entirety of the blocked account's content becomes invisible to the blocker (but not to others), and the entirety of the blocker's account content becomes invisible to the blockee (but not to others).

It's always been the main point of personal blocklists AIUI.