So the CAA want Ryanair to email all the customers again who they cancelled and say that they will pay for their alternative arrangements for trips with other airlines and even train fares if that is what they took as well as cover the expenses for routing to their original destination if they were offered alternatives to other airports.
Looks like this could be a time for those who have been denied these things with other airlines in the last few years to get their claims in quickly to these airlines and demand exactly the same that the CAA are forcing Ryanair into now and if the airlines don't reply send a letter to the CAA requiring them to take enforcement action.
Since the CAA are claiming these are the rules now, the other airlines do not have a leg to stand on and the CAA will have no excuse for not enforcing them to act like they are with Ryanair.