The point of BAT is not to get money for yourself, but to be able to tip creators. Individual ad viewers aren't terribly valuable (and Brave ads not being evil makes them less valuable), and only matter as a mass. You'll get a bit of pocket money, but as they aggregate on creators' end, that can compensate for losing revenue from evil ads getting blocked.
The purpose of BAT is funding Brave development, which is why Brendan Eich personally claims 30% of the currency ever minted. It's a joke along the same lines as Tether or Bingus Token in the world of DeFi.
A stupid pair of assertions, given etherscan.io exists and shows all flows from creation of BAT on. I don’t have and have never had 30%, nor has Brave ever sold BAT to pay for development or anything else.
Edit: I expected the YC crowd to pick up on Palantir puppets a bit faster. I'll gladly burn karma to get the word out though.