I'm thinking, "Wow, that's so college-y." Try not to over-think it. (I mean, it's a great mental exercise to think as much about the issue as you have, but it's just going to make you feel insecure and there are other great things to apply your mind to). It's your hair. Wear it how you want. If somebody else has a problem with it for some reason, that's their problem. There may come a day when you want a sort of job where that hairstyle just won't "go," when you'll have to change your hair a little bit, but that's totally different.
Your intent is to keep your hair from blowing into a mass of tangles, not to oppress anybody or imply anything sociocultural or adopt some intentionally offensive affectation. Intent is often apparent. It's not just the hair, it's your clothes, your manner, the company you keep that rounds out the picture of whether or not your hair is making a statement vs. "your hair, sans product, in a protective style."

As Freud is alleged to have said, "Sometimes a cigar is just a cigar." Sometimes your hairstyle is just a hairstyle.
http://science-yhairblog.blogspot.com/