Except they won't:

"Where does my contribution go if a publisher/website is not part of this program yet?

When there is about $100.00 USD in BAT for a specific publisher, from all contributors, Brave makes three attempts to complete the publisher verification process. We will hold unclaimed funds for a minimum of 90 days, after which it will be added to the UGP (User Growth Pool)."

https://brave.com/faq-payments/#formal-terms-conditions

That’s pretty toxic if you ask me. They’re monetizing others’ content for their user growth.