I feel like EV boosters overstate these problems. I have a 12 year-old Toyota with 200k+ miles, and the only parts that have ever worn out have been suspension and brake parts (wheel bearing and brake rotors/pads), which of course an EV will have as well. It's never had problems with the engine or transmission. There are oil changes, and it'll be nice to skip that once I have an EV, but it's also like a 20 minute thing twice a year or so.