When using Tor it is important to be indistinguishable from other Tor users. If you can be fingerprinted by user agent, screen size, fonts, add-ons, or numerous other indicators, then the anonymity set of your browsing behaviour essentially becomes just you.

That's why the Tor browser is setup to be as homogeneous as possible. Using Tor within Brave does not provide the privacy that users might expect, and Brave even point that out in their website. Hiding your IP is a good start alongside blocking known trackers, but it's only one component of properly avoiding tracking online.

Mozilla is investigating Tor integration: https://blog.torproject.org/mozilla-research-call-tune-tor-i...