Comment by mindcrash

Ungoogled Chromium (https://ungoogled-software.github.io/) will 99.9% likely patch MV2 back in if they remove it (as there's already support and they will never remove it) and Ungoogled Chromium based Helium (https://helium.computer/) even ships with uBlock Origin by default.

And then there's still Firefox and all of its forks.

Best of luck to Big Tech as people will move on elsewhere.