I don’t know if I am missing a point or not but I don’t exactly quiet get the hype as to me, it just chrome with poor man’s uBlock Origin and their own crypto in the mix.
Like how it that different from me using ether Librewolf or even Google Chromium and install uBlock Origin compare to Brave?
Well, what Google wants to introduce is a completely arbitrary limit to the number of filtering rules, so increasing that constant in the code should be no trouble at all.
Having said that, ad blocking effectiveness is lower on Chrome-based browsers already today: https://github.com/gorhill/uBlock/wiki/uBlock-Origin-works-best-on-Firefox
Padding those flaws out or offering similar functionality to uBO in their custom ad blocker, that does take some effort.