Mozilla as an organization makes me a bit uncomfortable. I still haven't forgotten the entire Brendan Eich fiasco. Who is to say that extremely politically motivated folks at Mozilla may consider it their duty to expose user(s) in a similar way? How can they purport to be a champion of user privacy after what they did to Brendan Eich?
What did they do exactly? I'm reasonably familiar with the story, but wasn't aware of Mozilla breaching his privacy. Do you just mean the act of speaking out against him in a public way?
The only real black eye for Mozilla in this story is that they promoted him at all. If he's just some dude that does his own work, doesn't manage people, and keeps his mouth shut, then, maybe you let his abhorrent opinion slide. But, he was literally the CEO and would make decisions that would impact lots of people.