Like most creators I know, I've heard of ko-fi. I don't have an account there. I haven't felt it fits my working methods. They don't have a page to take money in my name, either.
I've heard of GoFundMe and don't have an account there, either. Now that they seem to be quite happy to take money from people making comics designed to "stick it to the libs" I kinda don't want to have an account there. They don't have a page in my name either.
"I don't want to do business with you, and I don't want to have an account so I can opt out of doing business with you" is, I feel, a valid attitude. Is anyone who hears about Facebook's "shadow profiles" happy to know that Facebook is tracking them despite them not using that site?
"Having a human find a contact method for a creator" is an option. It does not scale but how many times do I see people writing stuff here on HN that advises doing stuff that doesn't scale until you know it's worth automating it? If Brave wants their model to work they need to put the time into this kind of stuff. Hell, have the user who wants to pay a creator via Brave do it: "Hi! We don't have any contact information for this creator yet, and our automated methods can't find anything. Would you tell us how to contact this person?" And then not take money in the creator's name until they actually say yes.