I think a better argument is naturalistic fallacy. Some of the most harmful and poisonous things are well natural. Think poisonous mushroom and plants.
Really, the point isn't to shame people but to provide education about possible risks. People are going to do what they want to do in the end. Heck, advices against excessive drinking and tobacco smoking has been decades old and people still do it while pregnant.
It's really about combating false claims that is it completely harmless. There are risks. That's all.
I completely understand that but that wasn't what I was saying. I think in my post, I had stated it didn't sit well with me. I know the risk, I completely understand how people can take natural and herbal guidance to the extreme (my dad is Rastafarian and thinks that every single herbal thing is better than anything else...it's their way of life and I hate it). I'm just saying that their kids turned out fine. It's unfair to say that every single child will come out bad, because they don't, or chalk it up to some luck. I will never do it and I don't agree with it but I'm not going as far as to police someone else on how to cure their pain.