My comment doesn't just pertain to you nor did I really dig into the merits of your situation, but it does serve as a valid test case that even someone with your obvious and deep technical skills requires more than just those skills to be in alignment with what the company needs from a leader.
To this day you can find people angry on both "sides" of the fake-news version of what happened. It constitutes an open wound for Mozilla which people salt and pick at over more recent or ongoing PR mistakes. That's a shame, because the truth is far removed from the cover story. I'll get to it as a memoirist, if ever, only years from now.