It doesn't need a new phone OS that isn't going to be used by anyone....
Somehow reminds me of that famous quote from some fella who worked at IBM.. Something about 6 computers IIRC..
There was a time when no one would've considered Windows to be useful. And who would ever have wanted what Android offers now just 10 years ago?
I haven't seen FF's phone OS and may never see it. But want better security? Maybe a separate OS "independent of the major companies" is worth someone looking at. Certainly, with the spying and data pinching done by MS and Google, I would welcome anyone who doesn't go down their path.