I am familiar with PCOS. It is true that there are more challenges with weight loss, but not for all women. It's also true that women, band or no band, are able to lose weight with diet and lifestyle change, WITH PCOS. I'm not trying to minimize how difficult it is for YOU. But it can be very easy to fall into old behaviors, while totally blaming it on a health issue.
Your original post said that you were hungry all the time, and finding food on every corner. I believe that some of the posters were responding to that. PCOS doesn't force anyone to make poor food choices. Even pregnant women choose yogurt over a Big Mac & fries. Again, I'm not saying that's what YOU were eating at every food venue on every corner. But you were eating enough to gain a substantial amount of weight, which typically equates to too much food, and poor choices.
If a good portion of your issues are in fact PCOS, then maybe posting in an online PCOS forum is a better option.