Last time I booked I was actually impressed with how well Ryanair was explaining everything. There is not much to clarify. You can see the same in the video in the post (which also features much clearer UX than the 8 year old example of the option in the country selector the article leads with).

If anything, RyanAir's strategy is to overexplain things, in hopes that people are unwilling to read what's on the screen and just click the first thing that advances the process