They could call it Aberdee, or Dundeen so the name's easy enough
Equally, why have Dundee or Edinburgh when they could build or reactivate one at...Leuchars. Or, why have Edinburgh & Glasgow when you could have one around Stirling, approx. mid-distance.
Basically, a city with its own airport is - generally - a great selling point for it. Granted, not really the case locally at present with what appears to be a dinner lady in charge. Would also appear they have the same mentality as the region generally... the oil price rise will rescue us, the oil price will come back etc. Err, not any more it won't.