I think they're being downvoted for the meth comment. I agree with everything OP and you said, but the meth example is a bit hyperbolic - the downsides to meth

I think they're being downvoted for the meth comment. I agree with everything OP and you said, but the meth example is a bit hyperbolic - the downsides to meth consumption would surely be felt much sooner than any theoretical downsides of the protein mentioned in the article.