Well certainly polarbear you are one of the most mellow posters!
Since you are mellow and seem to be very non-judgemental (trying to be balanced, looking at all sides) and also have experience being a science fair judge, I'd guess that if you think there is something off about the comment, then there is. Is there actually a stated rule that says they have to stay in their level for the math they use? Is this person just being super-exact and feels the need to find something to say?
What to do about it, I don't know except maybe if you're in that frame of mind, satisfy your curiosity to find out more about the judge. Don't know much about science fairs (sorry, sounds like a song) so I don't know if a name is associated with a comment.
