No argument on that, just that it be strange to worry about replacement part for an EV that isn't 5 or more years old. You will make as less sense if apply that to ICEV too, no new vehicle are expected to breakdown. Whatever module that might break on an ICEV will break on an EV too, but that's not enough to dismiss the point that EV is much more reliable solely because there's significantly less part required to run it.

You won't find any readily available part for a newly launched EV the same way you won't find any readily available part for a newly launched ICEV.

I was worried about that, too. My EV came with 6 vor 7 years warranty, so I decided not to care.