Yes. Yes it is. but then again it's about numbers. How much diacetyl is in a 30ml bottle of e-liquid compared to how much is in a bag of microwave popcorn, or at a Microwave popcorn manufacturing plant.
I don't typically vape "buttery or creamy" vape liquids, and I do buy liquids that are diacetyl free. But even if my e-juices did contain trace amounts diacetyl in them, do they contain enough diacetyl to be harmful?
Diacetyl is something to be investigated to be sure.
Without any exposure rates and concentrations then you really have no idea what you are talking about.
Here's an article that may be enlightening to you, but it basically says the same thing.
Diacetyl- Risks, Prevalence, and Precautions
Vaping trace amounts of Diacetyl found in e-liquid is nothing like inhaling the stuff working in a butter popcorn factory all day long.
You're alarmist posts reminds me of the type of drivel when people just off the cuff say that nicotine is one of the most poisonous substances on earth and then making a connection to vaping without taking the time to actually see how much nicotine is contained in e-liquid and how much is actually inhaled by the vaper.
Before you just rock off the cuff with your statement, I again ask for you to do your research. Then once you have educated yourself, come back here and provide some thoughtful analysis instead of fear mongering.