If you need this long chapter, then it's debatable who the people start realizing it is utter nonsense might be.
And sorry for not reading it, I already wasted too much time on this nonsense.
This equivalnece business comes from the time when sensors became tiny and so the FL went to 5-30 mm, but was "equivalent" to 25-150 mm on FF - to give an idea for people confident with older film systems. I don't recall that amount of equivalence talk when MF and larger formats were normal to professionals. But then there was no internet, the "semiconductor of stupidity".