Comment by vord1080

Chromium is more like ~35 million lines of code. And Brave is implementing Manifest V3, there's no choice in the matter. They'll be forced to because they rely on Google's Chrome Web Store (and chromium itself), which will stop accepting MV2 submissions in 2022. Their current claim is that they'll support the blocking webRequest functionality from MV2, that's it. You better hope Google doesn't block submission of MV3 extensions that use MV2 APIs that only work in forks.