Sure. You're technically correct. The post is mainly about genetic attractiveness, and I don't feel like that's effected by fertility or egg quality. A deformed baby will effect it's attractiveness, but I would not say that a young mother increases the likelihood of the baby being attractive.
The best way I can describe it is this: it's normal to expect an older phone to eventually have defects/issues when trying to use it. It's an older phone, and it doesn't work like it's used to. It's not normal to assume the phone will dramatically change it's color just because it's older. The age of the phone does not effect it's color; it was manufactured to be a certain color and it will remain that certain color forever. No matter when you bought it, it will be that color, because it was done so in the manufacturing.
In this case, the phone is the mother, the color is the genetic code of the the future baby's appearance, and the manufacturing is the genetic code of both of the parents.
Technically, anything can effect someone's appearance. It's not how I would interpret this question though.