I'm still not really considering switching to Brave but if this BAT thing makes it into Firefox (as an extension for instance) I'll probably give it a try.
I remain unconvinced that decentralized blockchains can really scale up to the number of transactions that would be generated by everybody "tipping" individual website as they browse them but that's a different issue.
They also don't have to make the transactions instant. They are basically donations so the transaction time does not really matter. They could spread the transactions for efficiency.
Plus crypto is evolving and they are counting on it. When their scaling issues come there might very well be some ok solution in likes of lightning network. Or doing stuff offchain.
For me Brave is actually secondary browser now because it is the "ungoogled chrome" that is easy to install and i can test webwork i do without chrome.
BAT is trying to change that - instead of ads you put money into Brave and pay those tiny amounts to creators directly. The idea is that you might not even know that you often read some blog and the browser distribute BAT for you (if you want).
Honestly it is not about the cryptocurrency hype at all. Like everybody wanted some legit usecase for crypto and now when there is one then people hate it because it is crypto...