It's a cheap airline. Being slightly adversarial can still be worth the price for customers. As a customer I treat booking it a pretty low-stakes adversarial game and try to enjoy the deviousness. Worst case scenario is costs the same as a flight with a more normie airline. (I'm Irish, as is Ryanair, which may be a factor in my fondness ). Anyway, I guess the devs/designers are also playing the same game, just on the other side.