All of this fuss about parking 20 aircraft (a little over 10%) for a few months in winter.
Ryanair buy their aircraft cheap, fly the pants off them for five years and then sell them on for more than they paid for them.
They have recently struck a deal with a large number of pilots to take most of their leave in one whole block. this will be in the winter. So, pilots, and aircraft will work hard in the summer, and not so hard in the winter. This is normal airline practice, Ryanair have just put their stamp on it to make it work better for them!