The same goes for other large servers.
Look at how many of the people you interact with are on the handful of the largest servers and imagine that just those handful of servers blocked your server.
Come, let‘s take this further…
Apparently Facebook/Meta is “joining” the fediverse. How nice of them. Now imagine that the largest instance is run by Zuckerberg. (Or <insert your favourite Silicon Valley billionaire here>.)
Imagine they become large enough to do the same thing to mastodon.social…
@aral
I'm no expert but I think I see what you're getting at.
Malevolent intentions will wreak havoc.