The anti-signal crowd loves to blame moxie for everything. Just part of their overall commitment to being fact-free

Moxie was fairly controversial in his stance on several issues. That's not "fact-free".

Moxie is no longer involved in Signal. Blaming him for things Signal does now is pretty free of fact

Other than that he set things up to be that way.

He’s not blameless for the fact it’s not federated, for example. Even if he’s not involved anymore.

Federating is hard, and Signal is trying hard to solve the metadata problem in a fundamentally different way (which I happen to believe is better).

I see you want federation, that's fine. I want private metadata. Don't use Signal if it doesn't do what you want, but maybe try to accept that not every project should do what you want. They have their preferences too.