Even without a source I can see how ICE vehicles are cheaper to repair (assuming you don’t have some high-end expensive car. I had a relatively “new”-ish engine replaced in my ICE vehicle (I’ll let you guess the make/model) for just under $2,200, this is including labor.
ICE vehicles are “old tech” and everyone knows how they work and where to source cheaper (new or rebuilt) parts. All bets are off if you’re working directly with a dealer when trying to save money.
I’m looking forward to owning an EV at some point, but will definitely need to find someone who’s competent whenever any major issues appear. Hopefully by then they’re significantly more common and the industry has more people that are competent at that type of work.