I guess it comes down to what "reliable" means. In my opinion if it has a failure but runs, drives, is safe and comfortable it's "reliable". For example I read lots of complaints about squeaks or rattles when music is played. I don't call that "unreliable"
My impression is very much the other way around: EVs are more reliable across the board for all vehicles (especially over ICE; most of the categories of unreliability that ICE invented don't exist at all for most EVs; catalytic convertors, belts, transmissions, spark plugs, ...) and somehow Tesla has managed to be the least reliable EV manufacturer despite their head start and despite some manufacturers intentionally sabotaging their EV car efforts to try to sell more hydrogen (Toyota) or dumber reasons.
ICE is more complicated - more moving parts - but manufacturers have had 100 years of experience building them.
Yes EVs should be more reliable on paper, but Tesla's aren't.
https://www.topspeed.com/tesla-reliability-and-repair-costs-....