Put two applications in. One made up for a guy in their 20's, say 24, and the other for a guy in at 36, and see which gets approved. make the 24 y.o a slightly worse application, and you'll get your answer. Easy Jet (via CTC) had a no over 34's a few years ago (it was on their website), until the EU made it illegal.
I suspect RYR like young thrusters with no ties, and huge debt, since they can 'mould' them (i.e. give them **** conditions and they won't complain). When they get a bit older, and realise they are being stiffed, they leave for the sandpit, and the new generation enter stage left.