The piece about New York was recorded in New York state or New York city?
In big towns people tends to mind their own business much more than in a small town in the country.
It's not surprising that more people stands-up in a small place in Texas.
Similarly I'm not surprised that more people helped the women couple than the men couple.
We tend to think that men have to deal with their own problems, regardless of their sexual orientation.
It made me think about what would I do if I see something like that happening.
Probably I would talk to the manager and to the waitress when she would approach me.
Probably I would not stand-up and make a scene.
What would you do in the same situation?
I'm not saying you're a bad person, but yeah, your attitude is sexist. Chivalrous, but sexist.
Opening the door, offering the hand when getting out of a car, offer help to carry something, etc. maybe seen as sexist, but they are seen as good education in many places.
Where I come from this is considered the expected behaviour, failing to comply is seen as rather rude (especially by women).
I discovered that a lot of girls appreciate chivalrous men, even if their attitude may be seen as sexist.
Only in very rare cases I found a girl that considered such gestures as sexist.
A quick explanation and some humor fixed the issue immediately.