A lot of us played football at some level, but not too many lined up in the trenches as a tackle, guard or center.
It has always led me to doubt someone when they claim to truly understand how well someone is playing along the o-line. It would be like me assuming some random person can accurately tell me how to file my taxes.
They may get a couple things right. But at the end of the conversation they're going to make some glaring errors and take some shots in the dark.
This doesn't mean we are oblivious to the importance of a good offensive line. I'm saying a majority of fans aren't going to sit down and talk about the proper technique required to pick up a blitz.