Yep. After the troll has trolled.

No.

It’s reactive moderation, which leads to a shit experience for vulnerable people if that’s how the majority of moderation needs are met.

It can be proactive just as well. You'd subscribe to a whitelist instead of a blacklist. Simple.

Because fediverse accounts are instance based

This doesn't have any mandatory connection to fediverse. Humans build systems.

Anyway, it seems from the rest of your post that you aren’t interested in engaging genuinely, so that’s that…

So finally the only real argument a snowflake has.