This is all great until you get to the stakeholder who prototypes something in Excel (or Honeycode, I guess) and since it only "took them a few days to do this"

This is all great until you get to the stakeholder who prototypes something in Excel (or Honeycode, I guess) and since it only "took them a few days to do this" can't understanding why scaling it up takes six months or a year and won't listen to you when you try to explain that they under-spec'd the system by an order of magnitude. (This happened a lot when Visual Basic came out - management types would spend a weekend playing with the visual UI editor and then give the developer a week to fill in the complicated business logic behind it.) (Developer here who has t-shirts older than a some of the people posting)