I mean, I initially installed it on mobile to get rid of the ads, and then eventually deleted it, after it started showing me ads on the main page. I also think that their whole original "ad replacement" scheme (https://archive.is/W0k4j) is complete BS and pretty telling.
Then there was the "donations for content creators" debacle, where they started gathering donations for various YouTubers, without.. actually talking to those YouTubers. But using their names and faces to promote the whole thing: https://web.archive.org/web/20181224011529/https://twitter.c...
Apparently, the original idea was that you could "contribute to any website you visit. The idea was that once a site reached a threshold, the potential owner would be notified. They could then authenticate (prove ownership, etc) and claim the donations." (https://old.reddit.com/r/brave_browser/comments/1e9i5ls/how_...), which is mind boggling to me that somebody actually thought it's a good idea.
Then there's Brave News, Brave Wallet, Brave Rewards, which is just completely unnecessary bloat IMO. You _can_ turn some of it off, still leaves a bad taste in my mouth though.