I see where you are coming from, and overtesting is a thing, but I really believe that the baseline of quality of all software out there is terrible. We are just so used to it and it's been normalized. But there is really no day going by during which I'm not annoyed by a bug that somebody with more attention to quality would have not let through.

It's not about space rocket type of rigor, but it's about a higher bar than the current state.

(Besides, Elon's rockets are failing left and right, in contrast to what NASA achieved in the 60s, so there are some lessons there too.)