The only simple way I know about is checking the instance status of each individual server. Beyond that it's building apps to collect the info for you.
At the bottom of every page of a Lemmy instance you'll find the "Instances" link, which takes you to a list of who are connected and blocked.
No idea of the chronology, instance blocks is a config file setting and doesn't show up in the mod logs. You'd have to look for announcements from your admins.
I understand the drama, but only have one piece of advice to those who can't accept such an decision: If you want it your way, make your own.
What can I say? If people can't accept that other people might have different opinions and worldview, it's not people I think I'd miss the opportunity to interact with. So I don't really lament those who block my home instance.
To address your surprise; it seems that the majority of new people coming to the Lemmyverse are reasonable and thinking people.
I'm pretty sure that means that if a Beehaw user is blocked from Lemmy.world, they can still comment on posts federated from Lemmy.world to Beehaw. In the Beehaw duplicate community. But when content from the specific user is sent back to Lemmy.world, the instance refuse to accept the comment either due to the individual being banned from the controlling community on Lemmy.world or from the instance as a whole.
At least that's how it seemed to work in late 2022 when I administered my own instance and people were intensely ban and block happy on the instance level.
But isn't it easy to test? I'll make a community on my home instance and you subscribe to it so it's federated to Lemmy.world and then you simply remove the content from Lemmy.world, yes?
Mods on their instance can't moderate content sent from a community on i.e. sh.itjust.works.
I don't find this any more dramatic than sh.itjust.works blocking lemmygrad.ml lol
Well, how about this:
You're dealing with people that left reddit because the moderation wasn't strong enough. By default, "regular stuff" isn't filtered enough for them. So when you people come here with your regular stuff and they don't have the manpower to filter through it, they decided to shut the gates. For now.
To be honest, I'm glad we're on a platform where the default is "I don't want to hear that so I'll ignore you" instead of "I don't want to hear that so I'll try to silence you".
First time being told you're horrible because you're not like "them" or get behind "it"?
Cool cool. What happens if the remote community isn't found on the home instance due to a lack of initial federation?
pls respek our culture, no flip thank
You're basically describing how the fediverse works I think.
How is it different than the current situation where both lemmy.world and beehaw.org are connect to lemmy.ml?