Nobody is saying it is a conspiracy. It is a failure. It is something that can be improved. Yes it happens at all airports but it happens at LBA much more frequently than those airports and unlike some regions we can change that for the better. You are wrong it is operationally easier to have aircraft on one side of the Pennines because that airport works more efficiently and is not built on a 700ft hilltop with a short runway.
Yes airlines will continue to operate from LBA but these events reduce the profitability and that is exactly why some routes end prematurely and many are never started. It also affects the fare price and hence the demand.
In any walk of life you try to improve. I don't want Yorkshire air transport to be near the bottom of the league I want it to be pushing the top of the league.
If and when your flight to Cork has to divert that costs money and somebody has to pay (either directly or indirectly). Guess who it is? So when you're choosing which flight to take you may very well chose the airport with the cheaper fare.