I think you may have missed the point that he was trying to make! Your post implied that there was no problem with unrefined carbs...but there are some who believe that ANY grains can pose a problem...see mercola.com for more info on this.
Also, the very common combo of starches with proteins (a la meat 'n taters) is a crummy pair for food combining...not the easiest to digest and often a culprit for gas and bloating.