Don't say ridiculously sexist and superficial crap and put an emoticon next to it like that makes it ok. It's not ok.
The logo you're seeing with a needle is one from Etsy [2], who by the way, were the driving force behind (and are the primary benefactors of) Hacker School's grants for women.
[1] https://www.hackerschool.com/assets/logo_140.png
[2] http://kongscreenprinting.com/wp-content/uploads/2012/02/Ets...
Not sure if they attached it 'easily', but that comment was squarely sexist in my book. Even if it was well intentioned.
"don't worry ladies its just craft like sewing a quilt"
they will be going on about how they have some "negro boys" in the next group.
I feel that even at my age, I am still a "girl" rather then a "women" personally.