I wish they'd set up an F-Droid repo so you don't need to follow Github links to download Firefox. F-Droid is the de-facto open source app store for Android, after all. Bromite, a privacy-focused Chrome replacement, has an F-Droid repo, and that's run by a single guy as far as I can tell, so surely Mozilla can do the same.

Right now only Fennec is on F-Droid (which has some changes that give you more user freedom than the default browser build…) but Firefox is nowhere to be found. Their build process is incompatible with the official repo but that doesn't mean they can't set up their own repo instead.