That's based on the manufacturer's "lets not upset our dealers" maintenance schedule and is completely unnecessary. In reality you can probably bring your EV to the dealer once every 4 years or so. On that schedule you should:

- check the brake fluid for water - change the cabin air filter - change the gearbox oil - check/change the battery coolant

If you're going in more frequent than that you're getting a very expensive windshield wiper replacement.

The real kicker is going to be repair costs. An EV has about 10% of the moving parts of an ICE car, so in theory repairs should be much less frequent. But if the ICE is a Toyota and the EV is a Tesla, YMMV.

You'll probably have to replace the battery at around 250,000 miles but at that point the car is worth pretty much scrap value anyways.