I don't speak for Mozilla, but I did see a bug in bugzilla which showed the blocking bugs for FedCM. I don't have the link now, but can share it later. That's what I thought of when I stated Firefox has committed to it. But I could be wrong.

I do see a Mozilla employee engaging regularly. You can see some of the issues he has filed here: https://github.com/w3c-fedid/FedCM/issues?q=is%3Aissue%20sta...

> I did see a bug in bugzilla which showed the blocking bugs for FedCM. I don't have the link now, but can share it later.

Here's the tracking bug for FedCM support: https://bugzilla.mozilla.org/show_bug.cgi?id=1959702