"Complaints from the same two people over claims in the advert that Orio al Serio, Ciampino, Treviso and Vasteras, respectively served Milan, Rome, Venice and Stockholm, were rejected because they were included in IATA listings."
And it looks like these two individuals were also Ryanair bashing for the sake of it. Granted, Vasteras is one of the most distant Ryanairports going, but I presume that the ASA also smoked them out over CIA, which is just 9.5 miles from Rome, compared to FCO, which is 23? And there's very little between BGY and MXP.
Whatever happened to Caveat Emptor (buyer beware)? The Ryanair website is very clear about the names and codes of each airport when booking is made. Is it really their fault if people don't check a map first?