I'd say that's a very accurate description of an inevitable future, assuming we don't extinct ourselves or wipe our our technology progress by nearly extincting ourselves.

One way or the other, for example, automated cars are coming. We can say "but trolleycar problem!" Sure, we need to worry about that! But, no matter how hard we gripe about all the problems and scary things about the new tech, it is coming. It will happen, because there is profit to be had there and it is more efficient than having humans drive and a million other reasons that more than overcome the obstacles.

So, an IoT lightswitch may not be as inevitable as self-driving cars, but IoT valve meters sure as heck are, or IoT lightswitches for an oil rig, or IoT smoke detectors... in fact, some of these might become legally required, once they get robust enough! (similar arguments have been made that it may become illegal to drive a non-autonomous car without lots of training/licensing)

So, people like you and me, that prefer zippos and straight razors and automatic watches over quartz watches and fountain pens and manual-transmission cars, we'll still be able to have our mechanical switches, we just won't live in a world where everyone wants those things.