Yes, maybe. Or maybe not.

Here’s what I can verify:

• the project is indeed archived
• the Matrix protocol specification is problematic
• people suck

For the last point, I don’t know if this particular person sucks more than others in the same community. I can see they claim that, but I can’t independently verify that. I hope the Matrix community can see the constructive criticism here and fix the underlying issues, regardless of who is “right” here.