An EV drivetrain is extremely simple and reliable. They are dragging their feet on purpose to extend their returns on ICE investment, not because it's "too hard".
I don't know why it is so popular to repeat this over and over because it seems palpably ridiculous to me.
Everybody has plenty of experience with electrically powered appliances, and many if not most of them only last a few years. I'm not suggesting this is inherent, just that there is no reason to consider them simpler or necessarily more reliable.
If there were washing machines or smartphones that you could expect to last decades, then I would find the idea of EVs being super reliable more plausible.
https://www.consumerreports.org/media-room/press-releases/20...
Reliability isn't as simple as "it's an EV".