This doesn’t surprise me at all. Look at how those kids were raised.
Sheltered, bubble wrapped, eyeballs glued to video games, sedentary and disconnected from the outside world by paranoid, fearful parents.
I bet the correlation with “has no dad” is extremely high.
Our great nephews are actually afraid of the outdoors. Even going into our attached garage is too much because the garage door might be open. Tried to talk to their dad about this more than once and his reply is that’s his ex’s department. One is so withdrawn he’s going to make headlines one day.