I like the guys like Ron Weasley. But the shy guy can be a perv and the stoic can be cold and a user.
Anybody can turn out to be an unfortunate choice. The author seems to be trying to draw the attention of teenage girls (not 40-somethings ;-), to concepts of a boyfriend that are realistic rather than unrealistic.
In her previous article, she gave as bad examples the vampire guy from “Twilight,” Peeta from “The Hunger Games,” and some guy I never heard of.