I'm certain Vec was just offering a possible insight into the way a bean-counter's mind works, not actually trying to suggest this is the way we should be thinking....!
As far as closing airfields goes, if it's not Wainfleet they're referring to, what else is seriously in the firing line? How about Wittering? An airfield with lots of ground units, but just one flying squadron? Must be room for 20(R) to move to Cottesmore?