Yes, down in every measure over the last 6 months. I think it's primarily used by a lot of people to organize sockpuppet-aided raids on twitter towards people who are instantly banned by mass-reporting the second they create an account on bluesky. It's basically old 4chan for unfunny people who think they're better than everybody else.
I'd be positive about any distributed social protocol, though, no matter who delivered it. The problem is that this was a Dorsey project that he already abandoned and denounced because it took a bunch of VC and is just waiting for the rugpull. Now you're supposed to trust a bunch of people you never heard of and a few famous paid evangelists.
It could be interesting to see what other apps may be born out of the protocol though!