No it isn't, it's a build config change which IMHO falls under the scope of package management/maintenance. The "Firefox" that runs on my system has a bunch of

No it isn't, it's a build config change which IMHO falls under the scope of package management/maintenance. The "Firefox" that runs on my system has a bunch of custom config tweaks and small source patches[1] applied by my distro/package maintainers to make it work with the rest of the system, and I don't call it a Firefox Fork. [1] https://github.com/archlinuxarm/PKGBUILDs/tree/151d14e349c82f107008b38a54d852cd36457444/extra/firefox https://github.com/archlinuxarm/PKGBUILDs/tree/151d14e349c82...