Spirelock

The headphone jack... didn't see it coming!

It's not really Adobe's responsibilty to kill it. At this point in time (2017ish), users have effectively killed it by removing it from their machine.

And if they really need it, Chrome is your best bet, since it handles Flash plugin, security and updates for you.

So it is being killed (but by the users) and eventually die off like other old software. Maybe running in an emulator in the future.