If he is referring to crosswind limit it is actually ATC limiting the runways not pilots. 10 years ago if you had a 30+ knot westerly you could tell ATC you could accept 34/16 for arrival and they would slot people in and it increased the flow. Then someone in Airservices decided to stop the practice and forced everyone onto 25 eventhough people were requesting 34/16 and happy to take the crosswind. An explanation was given on PPrune at some stage but I dont recall what it was.