3/ To be completely, honestly blunt, moderation tools on the Fediverse suck.
Blocking is essentially a hammer, and not all moderation should require a hammer. Sometimes you need a screwdriver.
I've personally requested that Mastodon and other Fediverse software start getting serious about pro-active moderation.
I understand a whole lot of people don't like more moderation tools, but more moderation tools means less of a need to always block.