The 'crypto grifting' is something you can turn off completely, it's there as a way to make the browser sustainable without accepting payments from Google to make it the default search engine.
I'd argue its far more trustworthy than modern day Firefox/Mozilla, they're not exactly the second coming these days.
What makes Firefox more trustworthy?
That's kind of like saying "yeah this is a mafia pizzeria but you can come eat at hours when the goons aren't there". Besides, why does Brave need that much funding? All they make is a Chromium wrapper, Google does all the work for them. They're not really an actual alternative in that sense, they just stuff it full of adblock, crypto, and god knows what. There was even a thing recently where it autoinstalled a VPN.
Yeah it's true that Mozilla's mostly financed from Google's anti-antitrust payments, but at least they actually made something of their own and have a trustworthy track record three decades long as a non-profit and Netscape before that.
the lack of cryptogrifting.