There may be a point if Ryanair's charging was transparent and honest, but it is not. I have long ago stopped flying Ryanair and eventually so will others. O'Leary's hostility to his pilots, staff and customers is ok when you are the little guy fighting the big established legacy carriers. But he is now the big guy and becoming financially abusive.
I don't object to him charging whatever he likes, but his pricing is deliberately deceptive. It amounts to "bait & switch" and there is no legitimate reason for many of his practices. He is also a monumental hypocrite. For example, claiming the DAA and BAA are price gouging and also complaining about the mark ups on fuel and certain airports. His mark up's on using credit cards is at loan shark type rates, but when challenged states that Ryanair can charge what they like.
The most offensive part of Ryanair though is their contempt for the law and the fact that they get away with it. For example, internet based companies are required to have an email address for customer complaints or issues. Ryanair refuses to do so. If you have a legitimate complaint about Ryanair they charge you to address it. If you have to call them, you must pay them to fix the problem. If they fail to deliver the service and you need to claim it on your insurance, they charge you to provide evidence that they failed to provide the service. These are utterly indefensible and amount to stripping away from the consumer any realistic remedy. The only way to address this is to more strictly regulate them. It is a cowboy outfit, run by a cowboy who is making millions by ripping off people. He has set things up in such a way that he rips off large numbers of people with relatively small amounts per person and relies on the fact that most people will shrug and walk away.