As is Brave, Opera and DDG (based on edge). I have said before that I suspect the minor chromium forks such as these will end up having to fork when google does commit fully to manifest v3, as they'll have no way to remain privacy focused if they try to keep using the mainline codebase; if they all work together on a manifest v2 chromium fork for them each to base their browsers on then it probably won't be that hard for them.