My take: No other browser is sustainable without advertising. Orion looks to be that guy, but we will see. We've already seen many other browsers stop development, like Mull and LibreWolf, due to lack of resources. Firefox itself is on the chopping block with Google potentially being forced to sell Chrome. We'll see what Kagi is able to manage with Orion, though releasing it with pretty much all the features one could want for free doesn't appear promising. I think taking a "private advertising" approach is the best we're going to get. This makes Brave sustainable.

The CEO is a dick, no doubt, but they pretty much all are, and every browser has it's drawbacks.

As far as the useragent, I kinda agree with Brave on that one. Sites want to be crawled by Google but they will block anyone else, which obviously creates an anticompetitive environment in an industry that severely needs competition.

As for the fingerprinting, I kinda get it. I'm sure some users were turning on strict protection and then complaining about the browser not working properly and ultimately ditching it while complaining to others. That being said, even with "standard" fingerprint blocking, Brave is the only browser I've used on CoverYourTracks and it returned "you have a randomized fingerprint". I'm not any sort of tech genius but I think the folks at EFF are and I trust them.