Ryanair may be a lot of things but they're not ageist. I know plenty of people who joined the wrong side of 40. Unlike the majority of national airlines in Europe (perhaps with the exception of BA), they don't care where you come from, how old you are or what colour you are - they want decent pilots who will fit into the organisation. I know quite a few younger people who failed the assessment despite coming from an integrated background - RYR is not the pushover people think it is when it comes to recruitment.
If you pass the assessment, they'll offer you a place. Age doesn't come into it in my experience.