Not to me. Nag is about as bad as it gets.
Well, on this forum, if you have your censors turned on, the word "b*tch" gets turned into "nag."
I think my favorite is the word "crap" gets turned into "crap" but if you say "crappy" it gets turned into "crappy" which is way better than crappy.
And then there's "kangaroo..."