What's different is basically the battery pack, which is "unrepairable" without disassembly and the electric motors and regenerative braking.
There's a lot less to fix on an EV. Which is going to put dealerships out of business, because that's their purpose.
Just so we're clear: You're saying that ordinary peoples' ability in popular fantasies has some bearing on real world expectations?
Right to repair has gained some traction in the automotive space in the past decade and Massachusetts has extended its law to include vehicle data standards. This is important because manufacturers generally don't like to make several variants of the same basic systems, so an individual state can have a nationwide impact.
https://www.theverge.com/2020/11/4/21549129/massachusetts-ri...
People will train themselves. In the world of science fiction, ordinary people fix spaceships and other futuristic vehicles all the time. The same thing will happen (will have to happen) in reality if we're going to have a futuristic society.