Network connected isn't just an implementation detail. If it's on a network it has potential security problems and if the functions rely on the network then it

Network connected isn't just an implementation detail. If it's on a network it has potential security problems and if the functions rely on the network then it needs updates. Phones commonly don't get security updates after 2-3 years. The idea that a fridge will keep getting security updates for the lifetime of the fridge, say 20 years, is not realistic. Not to mention the problem that people often don't configure devices correctly. Perhaps some here remember VCRs with the perpetual flashing unset time. The internet of things for companies and organisations that collect data and have staff to handle them and replace them regularly is a big deal. The internet of things in households is pretty dubious.