It’s not mean. It’s derived from what author said. Personally I love all compliments give and take.
See, it’s her call what she does in her house, I just pointed out, her logic is faulty. I personally don’t agree with her style of choosing what to compliment, what to not.
And to your point, things like hormone imbalance, stress happen to many. We struggle and loose former beauty of skin and hair. I wish it was in our hand completely.