Maybe for a few weeks two or three months ago it certainly looked that way, when people were in fact on a type rating course as soon as they passed the interview/simcheck, but they are filling TR courses with SAS and CAE faster then they can follow.
So if a shortage for ryanair exists (which I doubt) it would be because TR schools can't keep up with demand? If thats the case then thats poor planning on Ryanairs behalf.

(But as I said, these are just speculations)
Certainly there is no shortage of pilots as the great traditional november recruitement drive in the UK just... didn't happen! And everyone knocking on Ryanairs door as they are the only one recruiting at the moment.
(People are getting desperate even)
Off course this is just how I see it. Would love to read other thoughts on this
JFA