Your response is refreshing and contains, to my mind, quite some wisdom. I do though, find it hard to agree entirely with your initial statement. To many, it seems, diving is naughty when it's done by the opposition, but when it's not the oppositon all sorts of partisan and biased excuses for - and lame attempts at justifying - the dive are rolled out.
As for the FA having the guts to use VAR to reduce unsporting stuff, I have believed for many years that the FA, UEFA and FIFA really do want diving in the game. I cannot come to any other conclusion when multi-camera video evidence has been available for so long only for diving to have increased hugely in frequency. There was an attempt at sanity several years ago when Eduardo of Arsenal was in trouble for his blatant dive whilst playing against Celtic. Sadly though, Arsenal and Arsene whined and whined until UEFA backtracked. A bleak turning point, I say.
As for VAR and players ruled offside by an eyebrow, the solution is very simple: give the mysterious VAR judges 3 seconds to view a still of the moment in question. If they can't make a clear and confident decision, then the player is not offside.