Consumers do see fast charging as a benefit when buying a phone - that, and large capacity batteries, and/or low power consumption.
Especially now that smartphones are no longer a "new thing", even Grandma knows what their main shortcoming is... i.e., they run out of power, usually at the most inconvenient / annoying times!
So, I would definitely expect technology to keep moving in the direction of faster charging, since that is cheaper/lighter than installing a bigger battery...
PS. I still don't see why a MOSFET in series with the incoming power won't solve the protection problem. It can just block the power if the phone can't handle the voltage. No need for crowbars etc - just go to a high impedance state.