That was certainly not what I said. If it was interpreted as such I apologise.
The whole point, way back early in the thread. It was noted that Nitrox is of particular benefit where repeat diving is being carried out.
This was because less Nitrogen was in the breathing gas, allowing a greater NDL dive time compared with air. This becomes more noticeable as the number of dives increase.
If you have the luxury of breathing optimum mix for each dive this becomes significantly pronounced over a weeks diving.
Recreational facilities may only provide standard gases, which generally means Nx32 or Nx36.
I have certainly done my 'shallow' second dive on a rich / optimum mix to flush Nitrogen so that the following morning I can maximise my dive time. [A typical behaviour in Scapa.] Yes, if I avoided the second dive altogether, I would have had more time available than if I did the second dive on an optimum Nitrox mix. But I am on holiday, with limited time and opportunity, so I am maximising my dives.
Which is back where we started.
[*] This is somewhat academic these days for me. Most of my dives are on CCR, so I am always on optimum mix