I think the more general problem with the IoT is that it's putting a vast population of ageing, unpatched and unmaintained computers onto the Internet running applications who's sole aim is to get them to market ASAP.
I would expect a fridge to last anything up to 15 years I don't see Microsoft supporting Windows 98, LED lightbulbs should last 25 years and at end of life would be running the equivalent of Windows 3.1.
Probably the only good thing is that at least its not a monocluture :-(