"The Ministry makes a habit of controlling what Wixen are allowed to do, as well as what they are allowed to know. Magical Britain has but a single mainstream newspaper, and it's very much a mouthpiece for the Ministry. The Daily Prophet prints what the Ministry wants them to print. And with only a single source of information to rely on, the majority of Wixen thus believe what the Ministry wants them to believe. Really, I’d almost suggest that the reason why wizards ignore so much in the way of technology is because modernization would risk giving the populace at large better access to knowledge, but that assumes competence and awareness of things beyond their own personal little fiefdoms so it’s not particularly likely."