Unless the person had some kind of a mental incapacity, I can’t believe that he didn’t know the proper etiquette for what to do with his cart. It’s pretty clear from either side of the register, or from either side of the cart, that if the person who is in possession of a cart doesn’t move it through the line, the next person can’t get to the register. If the next person has to move it, they really can’t simply push it out of the way (behind them) because then it will be in the way of the person behind them, or simply blocking the aisle. If they push it forward, it will be in the aisle in the way of the people trying to exit the store, because you aren’t going to wheel both carts out to your car.
I’ve seen these people plenty of times, and unfortunately, sometimes they have to be called out on it. They’re the same people who take their cart into a grocery aisle and turn it sideways, blocking the whole aisle. Why do they do that? Because it’s more convenient for them to have their cart that way so that no one else will get in their way. They’re the same people that walk up and down the line yakking loudly on their cell phones so that they can be heard 3 aisles away. It’s convenient for them to have their loud conversation with their family, because it feels like being at home to them, other people in the store are just an inconvenience to them. These are the same people that put their one item on the conveyor belt, and don’t move it forward, even though the person behind them has a heavy hand basket full of groceries that could easily fit on the conveyor belt if the person in front of them simply moved up 2 feet.
I’m one of those people that if I’m in a store and I see someone who needs help, like an elderly person or a disabled person, or a parent who has a full cart of groceries and a fussy kid, I’ll offer to help them, but it grinds my gears when I see a fully grown, young, fit person who decides that his/her time is more valuable than everyone else’s and acts entitled. These are the same people that take their 25 items through the 10 item express lanes because they’re in a hurry.
I’da been OK, and probably would have said, “Good on ya, girlfriend!” If @jca had actually raised her voice at the offender. I’m sure she didn’t, but even if she had, some people need to be called out.
And yes, signs sometimes are necessary. Why do you think they have a sign at drive-thru windows at McDonald’s that say Pull Forward to Next Window to Pay? Because if they didn’t, some people would sit at the microphone order box, not budging an inch.