Colorado has kids stay in boosters until age 8, and all the booster instructions say to put it in the back seat. Airbags are one reason, but general safety is another. That's why most people buying trucks (who have kids) want those double cab ones. While Gannon was 11, I think the habit dies hard. ALL of the grandkids still ride in the back seat (one is 11 and tall for his age, still in the back seat). The 11 year old will start to want to be promoted to the front seat at some point, but fortunately most of the time the front passenger seat is already taken. His mom does have him in front passenger when they want to transport a couple of his friends, but otherwise, back seat.
In Colorado, that would be strongly discouraged. Kids up until 8 are supposed to have boosters. In some states, it's by height and weight. Gannon wasn't shoved anywhere. He had a little sister, they both road in the back seat (which is safer) and it was ordinary procedure for him, no doubt. I don't see any shoving. She helps him into the car. There's really no need to make LS sound worse than she is, she's doing a fine job all on her own.