Vote for seats scandals

An interesting exchange of views on this train journey. Manners vs chivalry? Manners could be said to be genderless in today's society, provided that you are lucky enough to find someone displaying manners in the first place. The bad manners in the article were displayed by those who rather ungraciously chided the author for not giving up his seat then subsequently harangued him. Misdirected assertiveness perhaps?
I have noticed that women seem to be less likely to hold doors open for anyone else whereas men of all ages seem to pay a little more attention to their fellow pedestrians/travellers. Is this a case of these women failing to notice the people in their immediate surroundings, having withdrawn into some sort of "personal space" or are they just mannerless harpies? Before I incur the wrath of the feminist thought-police, I should make it clear that I believe it to be the former.