"We do not name call of ANY kind". Those are the words PP used. And said the teacher shouldn't be allowed to qualify WHY certain words are wrong. If you can't say why certain words are wrong, you can't say why certain words are right. You can't have it both ways.
I understand (I think) what goal PP was trying to get to. They don't want the teacher to tell their kids that 'x' is ok because the parents may think differently. The problem is when you start putting out blanket rules, you generally end up covering too much.