It's called image and the Cowboys have one they don't like tarnished. It's called being a rookie and going against that image, not a good image to Cowboy fans. I'm sure a sizeable number of Cowboy fans (and Cowboys) use pot, too, but to have a player on national TV, for all intents and purposes, endorse pot is more than a lot of parents are willing to put up with. Maybe in Seattle they don't care about the images their kids get from pro athletes; in the south, they do.