Hey pal I would like some actual evidence that nothing is written to the flash in one way or another… Perhaps your example is going over my head but it does nothing to proven once and for all that nothing is written to disk when invoking the WiFi command. Perhaps you could take the time to explain your demonstration.
To really be convincing however, you would need to explain how configuration changes are possible with out writing anything to disk on unionfs mounted filesystem.
Then I would like some actual evidence that the limited writing that is allegedly occuring will cause any meaningful damage to the flash storage in any meaningful way.
You have done neither, and are resorting to being rude.
I genuinely would like to be proven wrong on either account but you are neither substantiating, nor backing up your claims with any explanation.
I do not believe that you actually understand this enough to really explain your point at this stage, but am happy to be proven wrong if you are willing to take the time to do so.