> There's probably order of magnitude fewer parts to break.
According to Tesla a comparative ICE drivetrain will have around 200 moving parts, while one of their vehicles will have roughly 17.
The real upside is longevity. While it is a miraculous feat that machines, such as transmissions, last as long as they do today - they're not needed in electric vehicles. I think it's fair to assume we all expect 100k miles and more out of a car produced in the last decade. The two main components of a traditional ICE vehicle are the main contributors to longevity of a vehicle: engine and drivetrain. Those two items are of such high cost to replace many people will not consider the repair as replacement is more feasible.
As electric cars stand today longevity is significantly improved immediately. The major failure components will be batteries and electric motors. However the former can be considered a wear item and is, generally easy, to replace. The latter is also much cheaper and more simple to replace compared to the ICE equivalent. That being said the expectations of a BEV today are 300k+ miles with significantly less wear maintenance.
Finally as electric vehicles tend to be more modular it may very well be that we finally start to see platforms instead of model year differentials. If I have 'platform 1' here are motor, battery, electronics, etc upgrade options. We haven't seen this that bluntly yet, but I hope we get there. Cars today are built as non-upgradeable partially due to the built in life cycling / planned obsolescence the manufacturers have created for improved sales. It would be great if we could truly move cars to a more repair / upgrade centric platform. Not only could this spur new forms of labor and business but help waste reduction and overall manufacturing waste and pollution.