This right here is my primary problem with Mastodon. Its ripe for drama like this. The amount of glee I saw in the older users their about defedrating felt really unsettling. "If X company comes we will defedarate them" "If X celebrity comes we will defedarate them".

Exactly this, it's like the most emotionally immature people on Twitter have been given an even more powerful blocklist to play with. Like thousands of mini-Musks with their own volatility problems.

This isn't true. In fact we do see email providers getting blocked, mainly because of spam or other unwanted emails being sent from a provider.

https://www.google.com/search?q=why+is+gmail+blocking+my+ema...

yes we do. remember when Yahoo email to mailing lists went straight to GMail spam for a while because GMail didn't like how Yahoo managed its headers?