I would expect Russia to just ban downloads of Firefox, if they said no. Like, why would Russia not do that? Chrome, Edge, Safari etc. will presumably bend over backwards quite readily. As in, it would be a disservice to the Russian people to get Firefox banned over this.
The Russian government is a disservice to the Russian people. However, I do not think Mozilla should go along with the collapse of any form of democracy.
Russia is either exactly like China at this point or it will be like China soon. US companies shouldn't deal with authoritarian governments. I also dislike that Cisco is a big Chinese government contractor.
Without a nightly or dev version I'm running bypass paywalls clean from github, persistently on the latest Firefox desktop release. I do not believe it's signed by Mozilla, but I could be wrong