Well, no, you have misread the situation again. What I was saying, and I also know a thing or 2 about electronics which you may or may not have picked up by now, was that in the olden days the only electronic part in cars was the condenser wired across the points of the distributor as a spark quencher and that the average person with any mechanical knowledge could sort out most breakdowns and get the car going again. That no longer is the case and anyone of those SMD parts or indeed TH parts can quickly ruin your day if they decide to pop their clogs. Some things are self-evident when they fail and others not so, and also today there are not many people who could repair such circuitry as schematics and spares are not available. You should know that the method these days is not to spend time trying to track down what went wrong and failed, but to replace complete units.
When was the last time anybody saw a television repair shop, once upon a time there used to be 2 or 3 in most towns, not any more, we are now a throw away society and replace and that is not cheap nor good for the environment which I find it odd that you don't appear to appreciate that aspect and yet you champion the EV as being good for the environment. It has to better to keep things going for as long as possible, rather than expending a massive amount of energy making new things all the time and disposing of the old when it could be fixed up.
It is the TH larger electrolytic capacitors that do often fail, but that can also be quickly and easily replaced and also normally easy to spot as they normally either disgorge their inwards and electrolyte all over the circuit board, or they bulge and vent. Occasionally they might dry out and cease to do any function, but is again easy to spot using the right test equipment which I have.