This is really disconcerting news. Mozilla has/had played an important role in the free and open Internet and now they are choosing sides. Picking winners and losers, whose point of view is more righteous is not the job of a web browser. Read the full article at:
This week we saw the culmination of a four-year disinformation campaign orchestrated by the President. We have to acknowledge how the internet was misused to get here.
And we have to change it.t.co/gIVZHQPYT4
— Mozilla (@mozilla) January 8, 2021
As an aside if you want a browser the focuses on privacy and safety give Brave a shot.