You seem judgemental. While I share the same preference for clear, open discourse as others here, I recognise that in some cultures (e.g. Japan where I live) I

You seem judgemental. While I share the same preference for clear, open discourse as others here, I recognise that in some cultures (e.g. Japan where I live) I will be in a distinct minority in this regard. It's only as polite or as rude as cultural norms dictate. I think a good approach is to recognise the different styles and, where appropriate, to help your counterparty to do so too.