I hate when people comment on my kid. Even something like telling her to be careful bothers me when I'm standing right there.
Urggh I hate that too...I am right here people!
You don't know her baby or her. There may have been a medical or behavioral reason why she did that. It's not for you or anyone really to judge another mother. You can patent and feed your child how you want and you are welcome to disagree but don't ever think you know how to parent better than someone else. The one and only exception is if you see someone causing physical pain to a child. Otherwise shut up and let them be.
That's exactly why I didn't sat something...but then started that thread because I wondered "Did I just leave it alone because I didn't want the confrontation, didn't want to be seen as 'that person' who thinks they know better and if so was I putting that child at risk? Should the child's safety and the education of the parent come before me not wanting to be perceived as 'that person'?" How would I feel if I did something that caused my child harm and then found out afterwards that everyone else knew it was dangerous but didn't tell me incase I got offended?