It's not like the browser is setting up a crowd funding page for you.That is precisely what the browser is doing.
This can have harmful consequences for the people they do it to. If someone's on a means-tested disability benefit, for example, and makes youtube videos to blow off steam, what happens when the benefits agency discovers that they have a funding option through Brave? A funding option that they didn't know about, didn't ask for, and didn't get paid out of (because the tokens get quickly flushed into the "growth pool" when uncollected)? Is Brave ready to be responsible for them losing their support mechanism?
If they start collecting on behalf of an open-source project that already has a nonprofit foundation for fundraising, what happens when a tax audit turns up this undisclosed funding stream that the project didn't know about and didn't ask for? Oops, there goes your nonprofit status! Is Brave ready to be responsible for that?
About every six months someone comes up with this "brilliant" "new" idea to crypto-fundraise on behalf of other people without telling them. And we have the same thread where people point out the same problems. And then like clockwork someone does it again. My hope is that one of these times, the people behind it get so utterly and completely financially ruined that it finally puts an end to the cycle. Maybe Brave will be the one to finally face that.