All the touch and goes I have ever done/seen have been with flap 30/40 and flap 15 selected after touchdown - ok if the runway is long enough!
I have to assume that EW has never done any 737 base training, the object of which is to.....err...............learn how to land the 737 with normal flap settings, ie 30/40
Runway length is by no means crucial and it doesn't matter what the flaps are
passing through when you rotate, although it is normally near to 15.