Transmission is pretty much the only component I can think of that's simpler. I have four motors (5 with ICE) instead of one. Lots more cooling lines. Ton of high voltage / high amperage wiring. And a ton of silicone chips that make all that work together.
I agree that you can build an electric car simpler than an ICE car, but there are no real world examples other than a few unique cases like Edison Motors.