From what I know personally, Firefox truly is responsible with user data. Though -- to steel man your point -- all the data Firefox sells is through their subsi

From what I know personally, Firefox truly is responsible with user data. Though -- to steel man your point -- all the data Firefox sells is through their subsidiary Anonym, which goes through great lengths to anonymize all user data that can't be tied to any individual. Example: selling market preferences of a town rather than the individual people in it.