Why do women get so moody about other women's implants?

I hear all too often "those are fake" like it somehow matters. Do implants somehow cause a woman to no longer be smart, attractive, or charismatic? I have never witnessed the same kind of prejudice when it comes to fake nails or hair color. As far as I am concerned, shaving body hair should be considered just as fake. It is a modification of what grows naturally. I happen to like dyed hair, painted nails, shaved legs, implants, etc. Beauty enhancement is supposed to be a good thing. Why do women speak so negatively of implants?