So much with anything privacy comes down to trust. Any piece of software's technical ability to keep you private is of course important but when it comes to a very large (in terms of code and use) piece of software, being able to trust the motivations and intent of the people behind it is also very important.

It's now reached the point that I personally don't feel I can trust the person leading the company, or the intent behind the software(s) the company makes.

Brendan Eich is a homophobe and an antivaxxer. It's hard to trust in the common sense of a man who thinks in these ways.

Brave has been caught inserting affiliate links and ads that track and just recently of selling other people's data. Any one of these things, taken in isolation is bad enough but this is now a pretty much established pattern of very questionable behaviour.

I also forsee a time when the browser is going to have to make some concessions to it's Chromium base. I know they've said the change from Manifest v2 to 3 won't affect ad blocking as their Shield won't be an extension but built in and that they'll also carry on supporting v2 but the issue goes beyond merely adblocking and they've been unclear on exactly how and for how long they'll support v2. As long as they're Chromium based browser, they are dependent on Chromium and the whims of Google developers. It's hard to see a good future for Brave.