This is one version of a broad category of highly elitist sentiments that is disturbingly common. They all take the form of underestimating a person's "intelligence" or "worth" based on that person's understanding of one aspect of one system, e.g. computer virus vectors ("only stupid people get viruses"), social engineering ("only stupid people fall for phone scams"), etc. It's poisonous, and pretty obviously immoral, but most of all, it's indicative of ignorance. Experience with people will demonstrate that this sentiment, even stripped of its hatefulness, just isn't factually true.