Haven't flown for work in over a year, but there are times I'd do 4-6 flights a week for 6+ months at a time.
I think there is just a general lack of self awareness in the average person. Look, we just landed and taxied to the gate. The time to pick up your belongings and ready yourself to grab your oversized stuffed in carry on bag is not when everybody in front of you has already deplaned. The time to put all your stuff away and have your bag in hand is on the taxi in. It really is not hard to anticipate what is going to happen in the next few minutes.
