Travel etiquette: Is it rude to stand up as soon as the plane arrives at the gate?

From debates over seat reclining to going barefoot during a flight to the best way to deal with a baby’s ear-splitting cries at 35,000 feet, perhaps the most interesting thing about travel pet peeves isn’t the annoyances themselves, but the debates they can spark. Take, for example, people who stand up as soon as the …