> I think there is probably a lot of work to do to fully pry the .mozilla folder apart.

So, things change over time. The question is: is the codebase at Mozilla still "living" in that it can adjust or be adjusted?

https://www.linuxfromscratch.org/blfs/view/svn/xsoft/firefox...

Requiring a mozconfig file shows that the code base has failed to transition to cmake or meson/ninja (directly; there is some python wrapper which may help here but I refer to the primary configuration). Mozilla gave up on Firefox a long time ago already.