They can still change idea. Also because Apple and Mozilla have already added support in their browsers, Microsoft is adding it to Windows soon… There is still hope.

Given the restrictive nature of mobile operating systems, such exploits are much less impactful than on desktop OSs. Furthermore, if you are dealing with those exploits, you are probably victim of a targeted attack, which is well above what normal users worry about.

We don’t poo in public toilets.

Android can terminate apps even if they still are in the recent app view. My Samsung is really aggressive in this regard with some apps, Firefox being one of them.