I made the switch last month from Brave for years, back to firefox. Brave is easy more effective at blocking tablets and ads, even with ublock/adblock. You can install it and just start using a cleaner web, and it's really easy to customize gow much of an effect the sanitization is. I defended a lot of what Brave did in the early days, because what I was hearing from developers is that they were trying to monetize it in anyway possible that maintained the privacy of the user, and I understand that ethos.
It's the years and years of missteps that finally got to me. I started to feel like I had to keep up on what they were doing to make sure nothing slipped through, and that's not trust.
I still think they have the best ad blocking tech, it beats my pihole, it beats Firefox with extensions. It's fast, and it displays websites reliably.
But, we do need to consider the roads we pave and the tools we use. Brenden Eich has not apologized for his donation, but at the time he did write a blog post about supporting LGBT initiatives at Mozilla and he had support from people that he worked with. He resigned because at the time there was nothing you could do to assuage an internet hate mob but resign. There is information around stating that three board members left because of his appointment, but only one actually said that,