Brave integrates its own search results with its Leo AI assistant

Not quite. Not unless by "stupid stuff" you mean shipped-and-fixed a couple bugs here and there (including confusing UI/UX), etc.

Brave operates in such a way that even an occasional misstep on our part puts us on equal footing with other popular browsers, but never worse.

Our "can't be evil" approach to data/privacy/security has yielded pretty stellar results over the years, and will continue to do so in the future.