> They are actively working on the standard and Firefox has committed to it.

Mozilla standards position says neutral:

https://mozilla.github.io/standards-positions/#fedcm

Their issue tracker on the subject shows they are interested but have a lot of reservations about the details:

> However, some of our reservations on the initial positive position have not been addressed and some new issues have arisen.

— https://github.com/mozilla/standards-positions/issues/618

Apple had a vague “interested” position over three years ago, with no further detail:

https://github.com/WebKit/standards-positions/issues/309

Have these positions changed?

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...