If people want to use Brave, or Windows, or install screen doors on their submarines who am I to complain?
The fact is for a lot of people, Brave offers a superior out of box experience compared to firefox or almost any other browser. In terms of ad blocking, speed and ease of use, it's pretty much second to none. The fact that you install it and go is really appealing and how easy they make the slider to adjust the aggressiveness of the script blocking is great ui that my dad mother could use.
Yes, the company isn't very good, it's headed by a guy with a questionable history and has a poor track record when it comes to monetization strategy. I stopped using Brave this year, but for ages it was my goto because I could just install it and have an improved web experience.