They are, but the drivetrain is a very small part of a modern vehicle.
If we're talking about Tesla in particular, if you've ever watched those transplant drivetrain videos you can see that aside for the battery temperature control and a few other things it isn't super complex.
Where Teslas are complex is everything else. Tesla started as a luxury brand and you can really tell even in the Model 3. Everything is electrified. Everything. Even the door handles themselves have electric motors in them. That little flap that changes the direction of the airflow in other cars? Electric motor in a Model 3. The design aesthetic is almost a contradiction with the reality: minimalism brought to you by huge increases in back-end complexity.
I'm not claiming this is intrinsically bad (nor good). But I am pointing out that when you complicate simple things you add more points of failure. The "debate" is if the assembly/maintenance/etc costs are worth the benefits provided, and that is largely a matter of opinion (and how much people value the benefits).
If we're talking about Tesla in particular, if you've ever watched those transplant drivetrain videos you can see that aside for the battery temperature control and a few other things it isn't super complex.
Where Teslas are complex is everything else. Tesla started as a luxury brand and you can really tell even in the Model 3. Everything is electrified. Everything. Even the door handles themselves have electric motors in them. That little flap that changes the direction of the airflow in other cars? Electric motor in a Model 3. The design aesthetic is almost a contradiction with the reality: minimalism brought to you by huge increases in back-end complexity.
I'm not claiming this is intrinsically bad (nor good). But I am pointing out that when you complicate simple things you add more points of failure. The "debate" is if the assembly/maintenance/etc costs are worth the benefits provided, and that is largely a matter of opinion (and how much people value the benefits).