I just knew where it would end up so I took a shortcut
..and you brought power meters into the convo, Ive only concerned myself with HR and HRMs
I mentioned the use in passing, as a parallel, to illustrate the point that the fact that some may benefit from collecting and analysing data, either in real time, or post-ride whilst some may not and that the difference between benefiting or not can be down to something as variable as personality. Some people like numbers, structure etc, others do not like it, it is overwhelming, an extravagance etc.
The point at which the in's and out's of the usefulness of power meters emerged when you backed the conversation into a corner wanting to know how you would KNOW something, to which I responded, either by training in a lab, or by field measurement using a power meter.
That is all.
To be honest, the point you claim to have been making (which seems to have evolved constantly without ever establishing itself) bears no resemblance to your 1st post in the thread. If these two things are directly linked, I am at a loss to your thought process.