No one is perfect. It doesn't take away from her knowledge.
We all have egos and worry about our appearance...some more than others. Many here are stressed about the breakdown in collagen affecting their appearance. Does that make them bad people. Nope...just human.
Since part of her income comes from women trying to lose weight and look good....there is probably a lot of pressure to look young herself.
I just recently stopped dying my hair and am embracing all the premature gray !! It takes some effort to let go. Not saying I`m perfect either. But I aware that trying to cling is useless and only increases suffering.