Each server decides on their own about interacting with other servers. Gab wasn't isolated by all servers, just those who prefer certain rules. You can create a server with your own rules.
Which beating? There's no single set of rules in Mastodon and it can't exist, just like with emails. Large servers (like Gmail) can make their rules and ban everyone who disagrees, but you can conclude that "email has unfair rules" from that.
I don't really care about the centralized Bluesky.
> Gab wasn't isolated by all servers, just those who prefer certain rules.
That’s the sentence I’m referencing. I understand how Mastodon works theoretically, but I have no idea why Gab was partially excluded. I haven’t been on Mastodon in years.
This apparently plays into why OP thinks Bluesky is a dead end, so.
Gab is a mastodon fork that is isolated from mastodon. What community guidelines did Gab violate?