The bug (https://bugzilla.mozilla.org/show_bug.cgi?id=1833855) title is misleading, the post's statement is wrong.
The mentioned bug is actually about X11 only builds, before 116, wayland was autodetected and it was not possible to make X11 builds without wayland support when the wayland libraries are present on the system.
Firefox allows wayland only build since 101 (https://bugzilla.mozilla.org/show_bug.cgi?id=1661450), well technically since 102, there were still breaking bugs (compile time errors) in 101.
(Gentoo introduced the X use flag for 101.0.1, https://gitweb.gentoo.org/repo/gentoo.git/commit/www-client/firefox/firefox-101.0.1-r10.ebuild?id=1c8562a5ea506ad21c44329625f43d510d8e 823e)
The mentioned bug is actually about X11 only builds, before 116, wayland was autodetected and it was not possible to make X11 builds without wayland support when the wayland libraries are present on the system.
Firefox allows wayland only build since 101 (https://bugzilla.mozilla.org/show_bug.cgi?id=1661450), well technically since 102, there were still breaking bugs (compile time errors) in 101.
(Gentoo introduced the X use flag for 101.0.1, https://gitweb.gentoo.org/repo/gentoo.git/commit/www-client/firefox/firefox-101.0.1-r10.ebuild?id=1c8562a5ea506ad21c44329625f43d510d8e 823e)
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