probably the same reason you post in small talk in general, you can't say it's constructive in the least, and usually the hate's a lot more entertaining then *****ing about filters.
plebes step your game up.
EDIT: ^ i don't see the problem with that. when you shop for clothes there are mannequins and staff that are wearing their clothes, when you order online you're looking through pages of 'little boys' (creepy word choice bee tee dubs), and all of those serve to provide you with aesthetic ideas to incorporate into your look. in that case its intended to get you to buy their ****, while i'm donating steez outa the goodness of my heart.
just call me a swag philanthropist