If you categorise that as rude then feel free to kick me out of the group.
Perhaps Ms Jones is your friend but her statement was pretentious and her unwillingness to back it up only serves to prove the point. My comment was not rude and disagreement is the lifeblood of online forums or should be. I have seen plenty worse that this on this forum.
I agree it should be kept polite, but I might have taken offence at her suggestion that she has superior knowledge to me, which I didn’t (and strongly suspect she doesn’t). I actually co-author scientific papers on medical conditions and have contributed to Cochrane reviews, so I do know what I am talking about.