I think you probably mistook this board for /g/, but in case you did not:
>>1It's like Chromium but with builtin stuff
No, it's not built-in, most of its UI and privacy stuff is bundled extension and/or nodejs gizmo running completely on the side as another process. That's the problem I have with brave - its overall clunkyness - and subtle annoying bugs, typical of nodejs applications. Similiar problem to Vivaldi. Writing nodejs code is perhaps cheap, but who though doing a browser chrome that way certainly did not learn from Mozilla's XUL mistakes.
Chromium isn't exactly a saint either, but when it's not currently busy contenting locks or eating up all RAM, it's still the snappiest browser out there - the only JS running is that of websites and extensions, not the browser itself. Obviously you need one patched removing all that default google crap (ungoogled-chromium, inox).