I'm not a mechanic but I have rebuilt an engine (common rail diesel with electronic injection) with a friend and do some work on my own cars. I don't really get the "everything needs to be mechanical" push. My previous car was mid 2000s, automatic, electronic basically everything. The reason why I scrapped it was because it had too must rust. The engine, transmission, and electronics were still fine after 200k and 20 years of harsh winters.

My current car had an electrical issue last year... but it turned out it was a mechanical issue. Something had chewed through the wires to the MAF sensor. Fixed them, and all good. It's no different from something chewing through a fuel line, except OBD was able to tell me what subsystem was not working correctly.

The problem I see with current cars is that the infotainment system is tied into everything - and usually the software sucks. If they just went back to seperate dashboard, AC controls and radio I'd have no issues with them.

My current car is from 2016, and I specifically looked for something that was like that. It is hybrid and has modern tech (e.g. radar cruise control), but everything is compartmentalised. First upgrade I did was replacing the headunit with a Chinese one that supports Android Auto/CarPlay. No functionality was lost, as the old head unit was literally just a radio and screen for backup camera.