We dealt with one like this on knitting paradise for quite a while until the admin tossed her out. Nobody ever knew anything but her and she was rudely dismissive, not to mention downright nasty, to anyone who might disagree with her…on anything. Biggest bugaboo for her (cue the really crazy rants) was anyone using acrylic yarn.
I wouldn’t even bother calling this one out on anything. Use what works for you, knit however gives you the result you want (I had been told to ‘come back when you know how to knit properly’ by the owner of a yarn shop because I don’t knit continental), adore those who would gift you with supplies for your hobby and enjoy knowing that you are a MAKER.