FRatSTN
You sound like a man on a mission and as your title states your keen on both STN and Ryanair but now might be the time to let it drop.
Firstly Easyjet did respond to your question , it may not have been the answer you liked or understood , but they did answer which is more than we got from Ryanair who simply ignored us on several occasions .
Everybody would like to fly to their destination from the local airport.
At STN you have far more choice on routes than others around the UK thanks to FR.
Easyjet have a strategy that is working well for them.We used to travel LTN-VIE with them regularly , then they dropped it and moved to Gatwick.
Yes the loads were always good on the flights we were on but they were obviously not good enough and off it went south.
You just end up adapting to the situation.
May I suggest that you will never fully really understand why decisions are made.Easyjet have given you their view, please accept it and move on.
You never know maybe one day they will come back and expand at STN.