Šime Vidas on Nostr: “Firefox has no plans to deprecate MV2 and will continue to support MV2 extensions ...

“Firefox has no plans to deprecate MV2 and will continue to support MV2 extensions for the foreseeable future” https://blog.mozilla.org/addons/2024/03/13/manifest-v3-manifest-v2-march-2024-update/

I guess MV2 is not as problematic as Google made it out to be. Just be careful which extensions you add.