I view Brave as very healthy competition to Chrome and Edge. Yes, it's based on Chromium. But it disables the many egregious privacy violations, as well as other bad things.
And whatever Google decides they want to implement or support in Chromium will be the web default, even just how they interpret ambiguities or undefined behaviours - standards be damned. We have tried this before and it was not pretty.
That is why we need competing browser implementations.
I'd argue for the opposite - we need strong standards and some methods to strictly enforce them. Governments could do that but the level of incompetency and politics are huge roadblocks
We have strong standards - but if there is only one implementation, that quickly becomes the standard no matter the text in the actual formalised standard.