What really gets my goat is the DYKWIA attitude of some people up the pointy bit of the plane. People who expect to get an empty seat beside them because they are Gold/Silver! It's not a private jet it's a (air)bus.
Last time I checked BA do not offer a premium service on domestic. Therefore any passenger is entitled to select any seat available to them. Every seat is the same on a domestic, though I accept some people choose to pay more. However paying more or having status does not entitle anybody to more space than the rest of us up the back on a 321!