[antonok]

What exactly do you mean by "modify Mv3"? Brave committed to continuing support for Mv2 [1]. Adding native adblocking capabilities is also definitely a more complex change than just bundling an adblocking extension.

Brave maintains patches in a very specific way [2] to ensure maintainability. My impression is that Kiwi's patches are structured in a way that technically works but isn't easy to keep rebasing on top of upstream changes. Kiwi's been chronically outdated compared to upstream Chromium whereas Brave generally gets updated within a day of a corresponding Chromium release.

[1] https://twitter.com/brave/status/1574822799700541446 [2] https://github.com/brave/brave-browser/wiki/Patching-Chromiu...