[anonymousab]

> I have never had mobile FF crash on me

A few months ago they released a version of Nightly that would crash for most users on startup every time. It was up on the Play store for several days.

That would normally be a buyer-beware situation as with any dev build, but Mozilla had purposely locked several important features - such as about:config configuration and loading any extension - behind the Nightly version, forcing users into that kind of experience.