a821 [1] filed a deletion request for firefoxext [2]: There are issues in the PKGBUILD pointed in the comments (notably sudo in package()) that have not been fixed in more than a year. Maintainer is upstream and development stopped a little after the AUR submission (Mar-2022). There are no votes and nothing requires this. It doesn't seem this is useful.
[1] https://aur.archlinux.org/account/a821/ [2] https://aur.archlinux.org/pkgbase/firefoxext/
