Even as an informal conclusion I think it's important to know who you're up against and what their motivations are. Waving that away is how we get people like known, obvious charlatans like RFK Jr in any sort of position of power. I know this is nitpicking word choice but the informal conclusion is "Not likely, and not enough to matter for anything."

What value is there to an informal conclusion when the topic is as important as intelligence? The downsides to creatine if taken without good scientific backing should not be disregarded, yet that’s exactly what many ordinary people are now doing because of “informal conclusions” like this.