I do have personal feelings about diketones, but my issue has, since almost the beginning of my issues, been about vendors making objective claims about their products when they don't have any proof. Just don't say, say it with proof, or say you don't know and there's nothing to prove. Right now if I wanted to vape some diketone rich liquids I would know where to buy them. I don't care about them selling that stuff, but I do take issue when I KNOW they are selling diketone-rich liquids and they have the words "no added diacetyl" or "dicaetyl-free" with no proof.
Maybe to you, but not to someone with sensitivities to certain solvents. I have never heard of a diketone allergy. hahaha. My comparison was to show that if a vendor is exalted for transparency, they need to be brought back down to earth for a lack of transparency for the most simple of requests. Not comparing the what but the how.