contextualising norms are for when you have influence and the people you are talking to aren't sure whether to trust you (esp to make policy decisions)
it does tend to get annoying when contextualising norms are so strong they don't let you say anything more complicated than 'red team good blue team bad' tho
of course for a viewpoint like this there are going to be people you can't persuade and who are going to be angry at you either way