I'm aware of so-called stable coins. The risk with them is you must trust they have the backing & will make good on your claim. Now, since Brave is a company dealing with customers and content creators who actually have to get paid by them, they already must be trusted...so I do think this would have a been a better way to go.
I understand that crypto can be converted "easily". But how does that square with storing BAT in your wallet for long periods of time to frictionlessly use it to pay content-creators? Is "eaily converting" (presumably quickly with very small "hodl" periods) consistent with how the token is supposed to be used: stored on a wallet, collected by content creators periodically?