If binance is fine with it then sure, but it's not like Binance is getting any extra sign-ups thanks to Brave from these suggestions, they're just giving up a p

If binance is fine with it then sure, but it's not like Binance is getting any extra sign-ups thanks to Brave from these suggestions, they're just giving up a percentage of their trading fees when it happens (the user would have signed up regardless of if you allowed them to use the optional referral code or not).