I left Mozilla (brief undistinguished tenure; briefer overlap with you) in part because I felt it simply refused to acknowledge that the Internet of 2005 (dominated by 500M people using web browsers in democracies) was not the Internet of 2015 (3B people, mostly apps on smartphones, tracked by their SIM cards and social networks). I was thrilled to start working on FirefoxOS, then soon experienced it as a kind of doubling-down of denial. Skimming Brave's About page, I don't see anything that addresses the existence of Verizon or Windows OS-level security, let alone WhatsApp. I have no idea the extent to which other people think this way, but to me the silence of Mozilla and Brave on the extent to which browsers on laptops have simply been overwhelmed by the rise of other tools and other layers makes it hard to take their pronouncements seriously.

PS, thanks for saving the Web when you did. It seems genuinely heroic to me.