Hmm.
I'm glad to see this topic. saying, "What a UAV!" comes across, to me, as skirting around the rules, as others have pointed out.
I get a little frustrated when I read someone's vent about whatever and I can't freely say, "What a jerk!" I have to come up with somehting more constructive, like, "Well that was rude."
Sometimes calling a duck a duck is much more satisfying and gets the point across more clearly than addressing a behavior.
Also, I'm an adult. Yeah, I should act like one, but for crying out loud, leave me alone and let me vent with whatever non-swear words I want to use.
JMO, of course.