Firefox’s implementation of manifest v3 doesn’t come with the same restriction as Google’s. Ad blockers will still work with manifest v3 on Firefox (but not on chrome).
This means that all manifest v3 extensions made for Chrome work with Firefox, and almost all manifest v3 extensions made for Firefox will work with Chrome.
They already support manifest v3, but with less restrictions than Chrome’s implementation.
Firefox’s implementation of manifest v3 is a bit different than Chrome’s, and still allows for blocking webrequests with no upper limit.
https://blog.mozilla.org/addons/2024/03/13/manifest-v3-manifest-v2-march-2024-update/
https://blog.mozilla.org/addons/2022/05/18/manifest-v3-in-firefox-recap-next-steps/
Let’s not build anything because there are no users. There are no users if we don’t build anything.