I'd just say that you'll find threads in a lot of forums on here, widely contributed to, which detail DYKWIA-style behaviour - so sadly, I think we all know and have seen there are people around who believe they are more important than someone else just because they are travelling in a higher cabin or hold greater status, although I'm thankful not so much so on A3 flights (in my experience - YMMV) as other carriers, so that doesn't so much apply here as it does in the wider flying world.

Perhaps I'm just getting old and mellowing, but - whilst I do still like to take advantage of priority boarding to ensure my bag is somewhere within 20 rows of me - I'm really beyond worrying if a few people get on ahead of me because the bottom line is that it doesn't negatively impact me one iota.