Without wishing to appear too analytical, katek (though it may appear so, I know), I'm still puzzled as to why you were shocked, to use your word, by the gesture on the train. This is simply because I am never shocked by kind gestures and wonder why anyone would be. And if I'm surprised it's only ever in a pleasant way.
I suspect that that particular train conductor would have made the same gesture to anyone, of whatever age, who arrived puffing and fighting for breath on his train, always providing he happened to be on the spot at the time. Better to prevent an asthma attack or heart problem than to have to delay the train because someone needed an ambulance as a result of no-one heeding possible warning signs.