You have to opt-in to Brave marketing like you mentioned. It allows people to earn BAT if they want to, so they can tip site owners. Better than ads right? The only other complaint is the home screen where you can buy crypto and they get an affiliate payout, which is how they make money. That can be disabled and have you seen the default home screen of Edge? Its news is just ads and paid campaigns.
Brave also supports more protocols like IPFS, Web torrent, and Tor, its telling other browsers don't.
The power of propaganda is strong. The GP uses Edge that he knows is spyware and doesn't even consider Brave because one little talking point that simply gets summed up as "crypto".