True but if they've accepted KYC, one should wonder what else they have also accepted and have done to the browser. Besides as I said it's not like there is a lack of good other open source browsers that people can use to improve their privacy.
With KYC to claim the token, it unofficially forces users of Brave browser to KYC. If they use the browser, they will have more reasons to consider KYC to claim rewards. When they claim reward once, they will do it more and the reward in token is like a KYC-honeypot from Brave browser team.
A truly privacy browser should not have that policy to distract their users from privacy protection. If they design a privacy browser but at the same time, design some policies, reward program to break the privacy policy, their browser is no longer private.