Just saying at every ROH show I ever been to (about ten from 05 to 07), there would always be wrestlers hanging out with fans taking pictures and signing autographs. I never saw Punk doing that but to be fair he was only at three or four of those shows. Still, pretty much everyone else from Samoa Joe to Homicide, Danielson, Nigel, etc always seemed cool, available, and approachable. My brother even got his picture with Bobby Dempsey, who seemed shocked anyone even wanted a picture with him. At one show after he'd already gone to WWE we saw Punk and Maria sitting in the General Admission section not far from us.
Anyway, wrestling fans are weird in general. It's not the not signing autographs that makes Punk seem like an a$$hole, its the whole straight edge shyt and how he seems to think he's better than everyone, and how despite being given everything by WWE he still seems to believe he was held back.