Since that's not even close to neutral, it doesn't seem like you posted it in good faith. Please don't do that. I'm skeptical of the subject matter too, but flipping from hype to denunciation is not what we're looking for here. In fact those two things are variants of one another.

"Human longevity embiggenator candidate #318621"

And I can promise you I'm posting this in good, er, spirits.

I think you missed the joke.

“The results from studies indicate it should be safe.” And effective? Another pause. “I’d rather not say anything that definitive.”

So, yes calling it a scam is close to neutral in fact if not tone.