> Mozilla is there to build browsers. Politics should have been left at the door.
I think you misunderstand Mozilla. Just have a look at their mission statement[0], and their manifesto[1]. Mozilla's goal is not "build the best browser and get the most market share". Their goals are inherently political, and building a browser is just part of how they try to achieve their goals. To expect that the people working for such a political organization with such a strong ideology is pretty bizarre to me.