Flanker wrote: there are so many parameters that play, that if you weren't in the cockpit that day, you should refrain from criticizing.
We definitely should not!
What happened that day was pure
statistical sampling: on a randomly selected day, a meaningful number of flights from numerous airlines from around the world, all heading to Madrid, were forced to unexpectedly demonstrate the robustness of their contingency planning in routine operations, not under some theoretical best case scenario, but in case they are forced to deviate from their intended flightplan for a reason beyond their own influence: no less than 3 problematic cases emerged from this real world sample, all of which were Ryanair flights!
I am working in QC and using statistical sampling as one of the means of doing my work and I can tell you this is a
statistical deviation which screams loudly for further analysis and urgent structural rectification, not so much because multiple Ryanair flights ended up in an emergency situation that day, but because this airline appears to be the only one of the whole sample population ending up in such an unwanted state.
Ryanair clearly was the weakest link that day and I'd really like to see authorities dig deep into this to find out just why they were the only ones who had to put extra stressload on an already stressed system and as such risk causing cascade problems for all users of that system, i.e. the other airlines and passengers in the air!
Analysing statistical deviations can help to detect structural faults well before they start to cause dangerous systemic failures: better not ignore them like you are much too eager to do here, just because the deviator is not of a convenient nature to you...