The idea is that in the near future or even present day of the Fediverse, we'll see groups of servers, moderators, and communities working together to define the boundaries that they want & accept.
e.g., FediPact could be considered a "bloc" of server's who all agree not to federate with Meta, that'd be an example of such.
You could maybe also consider the Mastodon Server Covenant as being a "bloc" of servers
e.g., they could publish a federation "accept list" of all the servers that have agreed to it, and have a process for appeals or challenges, and then you could subscribe to that and only accept instances that agree with the covenant's terms.
#moderation #fediverse #TrustAndSafety