Tbh most people complain about Stansted for one reason or another and to be fair they are quite valid.
But most people will put up with it for the low fares as pax figures show! Which can only mean the airport must be doing something right, if only its with the airlines/prices and routes you can get out of Stansted nowadays.
Although yes Stansted is by far the worse airport I have used for Security/Departures and arriving back