How can we have a meaningful discussion if you pigeonhole to the irrelevant factors only.
This is not about energy efficiency. You argued very hard that is it about efficiency (energy or otherwise).
Simple, someone asked about efficiency, and whether cheap chips in a water heater, toaster, etc. can compete with cutting edge mining chips. I answered. The answer is yes.
That may be irrelevant to you, but it was relevant to the person who asked.