How does your ad hominem questioning of their expertise / how they became involved invalidate the results? The study reached its statistical significance goal,

How does your ad hominem questioning of their expertise / how they became involved invalidate the results? The study reached its statistical significance goal, and thus the study was ended as it would be immoral beyond that point to continue to give people placebos when they knew the drug was working. I'd suggest reading up on the Tuskegee syphilis study for the ethics behind why studies are ended early once treatments have been statistically validated.