I think that it's shady too. I don't know much about Brave and don't want to know. To me a huge red flag is that Brave tries to push its Basic Attention Token (BAT). BAT is a token of low quality because of the following reasons.

1. The developers try to make up a reason to create another coin for something, that doesn't need a coin; 2. The relationship between the browser and the coin is not cryptographically strong and will never be — it's impossible to prevent fraud when their system is just a program that checks for certain condition (an ad viewed) and communicates to its backend, instructing it to give some address a coin. 3. The developers created a billion of tokens out of thin air and now try to give it some value. And traders do believe that it has some value.

I personally don't tolerate shitcoins even the slightest. Thus, I see Brave as nothing, but a browser engine with a content filter and a shitcoin embedded.