Sounds like you have bunch of stuff conflated here. Zero crashes don't mean you get a well-formed UX and that there are no QA surprises. No crashes ever during

Sounds like you have bunch of stuff conflated here. Zero crashes don't mean you get a well-formed UX and that there are no QA surprises. No crashes ever during any time doesn't neither mean that there is zero technical debt, unless we have vastly different understanding of what technical debt even means...