It's particularly foul-smelling icing, though. NPOV certainly is compatible with not giving minority or conspiracy-theory opinions undue weight by inserting them everywhere or making them seem as if they're mainstream, but at the same time outright name-calling is a little inappropriate. Saying, as Wikipedia, that Creationism is pseudoscience is across the line of good taste I think. Not mentioning the young-earth theory in the intro to [[Earth]] may imply that we judge it as not being a serious scientific position, but outright saying "Creationism is a load of horse-shit" is a little more inappropriate.
No-one is proposing that we do. Pseudo-science is a word with a particular meaning, not name-calling (unless applied to something that isn't actually pseudo-science).
There are, Godwin help me, nazi categories on Wikipedia. That's not name-calling either, when used appropriately.
Regards, Haukur