Earlier quoted context omitted.
I would be careful to conflate internet connected trash with enough ARM cores and LoC to make your brain melt with the likes of a well placed humble microcontroller.. the mechanical or analogue components they replaced were usually far more temperamental, bulky, expensive and bad at their job. There are exceptional environments like in nuclear power, but for most purposes integrated electronics have improved reliabil…
Anyone who ever tried to fix a broken washing machine mechanical timer/programmer agrees with you. I did try and failed miserably, those things were a nightmare to fix and broke quite easily.
PCB's? Forget it. E-waste central.