Maybe you don't see a lot of Teslas at shops because they don't require as much maintenance?
This is incorrect. I pass the Tesla repair shop almost daily and it's often full house. The only time it was constantly empty is when there is a shortage of replacement parts. They don't let the cars just sit in the shop for months while they wait. What's good about Tesla is they give you Uber credit if they don't have a loaner to borrow while your car is being fixed/maintained.
Then I know mechanics here and in Vegas for Tesla and they disagree with your general statement of the above.
*edit:
The main thing I can see that EV's don't have to do over ICE is the annual changemyoil.
For my 2008 Lexus IS250 which I traded in in 2020, I've only done the following with regard to powertrain type stuff:
1) Changemyoil annually
Other stuff:
Never replaced the radiator or fluid
Never replaced or added power steering fluid
Never replaced the spark plugs
Changed brakes that included the 4 disc once. Assume break fluid was replaced.
Changed all 4 tires once
Changed 3 different power locks as they stopped working shortly after buying the car. 4th power lock broke, but I didn't want to spend $700 to replace since it was the rear door which I don't use often
Had the entire interior dash and door panels replaced due to class action lawsuit settlement. This was about 6 years after I got the car, so it was awesome to have a brand new interior.
Change power window motor on 2 diff windows.