Hmmm...sounds more like lack of musicality. I've come across these 'guess the key' types. They decide on one beforehand and if you suggest a tune they say 'that's in A, we're playing in D today'. Then you ask for the name of a tune they've just played because you'd like to learn it yourself. Nobody knows. 'Any idea which book you got it from?', you say. 'Book? Oh, no we don't use....'

What sort of (inverted) snobbery is this?   Definitely time to get the coat.