[fleddr]

Instance blocking will ultimately create the exact same dynamic as found at Twitter.

Aggressive online activism, regardless of your political direction, is here to stay. So it can and will be used to pressure other instances into blocking yet other instances.

[miloignis]

Small and single-user instances don't really fall prey to this - how is one even supposed to know what a single-user instance is blocking if you don't tell them?

Anyway, even for those that do what you'd have is a stratification into levels of instances with different tolerance levels of blocking. I think this is a very different dynamic than exists on Twitter, can you explain more about what the identical dynamic would be?

[fleddr]

The dynamic would be that the tolerance level you refer to would be as low as found on Twitter: people perpetually offended at the smallest of disagreements and aggressively silencing, blocking, canceling the supposed offender.

An example I saw on Mastodon. A mid-sized instance wanted to stop federation with another instance that is well known and large. Why? Because that instance is federating with yet another instance containing a user supposedly affiliated with some right wing movement. Said user had not posted anything yet.

So we're talking about a 3rd order blockage in this example. Now you might reason, the mod of the large instance is under no obligation to do anything, it's their instance. But that's not how the game is played. You wouldn't want to be called an enabler of fascism, would you? You'll comply or be labeled a monster. Or they could lobby to put your instance on a standard block list that is widely reused.

When you let this run unchecked, you'll end up with Twitter: bubbles and fighting "the other side".