Not necessarily. What about a family who book late and there are no seats together because already allocated by people who booked earlier and / or paid for their seats? Should the family board and then expect others to move for them...or expect BA to shift people around to suit them?

I was on BA plane to FRA a couple of months ago and when some of the last pax boarded there was a woman in the wrong seat across the aisle. The bloke politely said, "excuse me, you are in my seat" and the woman in his seat snapped, "but we are a family travelling together" and gestured towards the teenage girl and man in the adjacent two seats. A rather heated argument followed and the woman was asked to move from her seat by the CC and she finished up in her correct seat about 10 rows back.

I just found her sense of entitlement quite breathtaking, ie, that because she was travelling as a party of 3 but hadn't been able to secure seats together (for whatever reason) she could just simply sit with her family. And then when the person whose correct seat she occupied arrived, she felt is acceptable to simply tell him that HE would have to move because of HER need to sit with her teenage child and partner. Quite unbelievable to witness really.