I don't get what that guy is so proud of. I can think of one target demographic that would consistently fit in XS-M and that would be crack addicts. Also, what cool highschool kid would value some old, surgically misshapen dude's opinion on 'cool'?
I'm fine with some stores catering to the smaller crowd, because it can actually be kind of difficult to find clothes in XS-S when the world around you is getting larger and larger. My mom usually shops in the children's sections nowadays, because more and more stores don't carry adult clothes in her size. It's not like she's too thin. She's short and has a healthy weight to match. My sis and I are like that too. But it's stupid that our size is seen as ideal. I know plenty of attractive healthy young women who generally look best in XL simply because they're tall and curvy. Good boobs take up a lot of space, you know?
Edit: took a look at the A&F webshop. Wow, that stuff is kinda really boring. Some of the sweaters look like something grandma would knit and not in a good way.