DOG says...
Its just an administration penalty to discourage people from holding non-IAA licences. To be fair the the airline, the multitude of different nationalities working at Ryanair means signing off entries in licences from 30 or 40 different nations becomes an administrative nightmare.
Why??? Pilots divided by the number of TRE equals the number of endorsements. Copies have to be sent to the training department and filed away. After all, we are talking about one piece of paper per pilot. Perhaps the penalty should be redirected to planting trees instead... don't you think?
If the IAA has no heart burn over the issue then why should FR?