Yeah you second point seems off. I have meet English people complaining about talking to danes. I was told that if you ask a dane "How are you?" as a greeting, danes would reply with a long winding answer of how their life currently is.
It feels very rude for me to just answer with a "great/fine/ok and you?" when someone asks me how I am, I think is has something to do with that the Danish version of that sentence (hvordan har du det?) is something that is most often said to someone when that person is having a tough time or is sick or if the person saying it is worried about the other persons emotional well-being.
(Unfortunately this carries over to all sorts of social interactions/situations that I'm not conscious/aware of, but this is one that I'm pretty sure about.)