From what I've read, Brave makes no promise that they won't funnel/share your info or surfing traits. It's subtle. They say they 'block' tracking, cookies etc. Nowhere do they promise you total anonymity from what I've read.
Let's face it, these companies are in business to make money and they are not above using your surfing data or habits to do so.
For now the Brave search engine has less of leftist bias..for now.