I think a lot of men tend to be buttheads, to be honest (and I'm capable of that sometimes myself). About 2 years ago, I dated a girl who had gastric bypass a few months before we met. I didn't have any problems or reactions to her body, even though it was still changing and healing. So, thankfully, we're not ALL like that ALL the time.
I also think those of us that are overweight tend to be a little less judgemental towards physical appearances than the 'normal' people, but that's me. I say if you're coming across people who are like that, and you get rid of them, good riddance.