32-bit and 64-bit issues and options still states:
The 32-bit version of Firefox in the Firefox directory cannot currently be removed but will in a future release.
But is it still true since 2013's Platform 27.0, which states "This version introduces the option to leave off 32-bit app support in dual architecture apps" and even name checks Firefox?
In other words, the installation screen has "Include 32-bit Support" unchecked by default with the description "Allows the app to run on 32-bit Windows PCs".
BTW, there's still an empty FirefoxPortable\App\Firefox folder for some reason, could you maybe remove it?
Fixed, thanks for the heads up.
The empty Firefox folder is created due to the way the PA.c Installer's preserve files/directories functions work. It doesn't affect anything and can be ignored.
Sometimes, the impossible can become possible, if you're awesome!