Still, as from a mechanical engineer perspective I would trust slightly more a combustion motor system to work offline rather than an electrical, where I could never know how the motor really works and relays on.
I also do have a degree in mech eng and electrics as well. Electrics are much, much simpler, the reason EVs have a reputation for being hard to service is that they are new and chock full of online bullshit, which is true of new ICE cars as well. If it was just the battery and the motors, it's incredibly simple.
They're simpler in concept but then you slept 27 on a network and then the owner gets to find out that when one of the components dies you can't just pull one out of something else and put it in because it's not licensed correctly.
What would be more complex an electric fan, or a fan with an internal combustion engine? It's all the add ins that make cars complex. The motors are always simple.