[Gualdrapo]

Not a (consumate, formal trained) developer so please don't take my word on this, but for what I've read the big issue development wise about forking Firefox is that its codebase is kind of a mess, in like dissociating the Gecko engine and the UI would imply a tedious, herculean effort, and this is the main reason there are few Firefox "forks" (librewolf, etc.) with little modifications respect to Firefox, whereas there are tons of forks of Chromium.

Now, I understand making a Firefox fork that doesn't include this new changes in upstream doesn't imply major changes in its code, but still it seems like if you want people to use your fork requires more than that, or maybe you'll end up with a scenario like Debian vs Biebian and Hannah Montana Linux.