I have a theory about this. Let’s call it the McNabbing of quarterbacks. NFL executives and analysts have devised a system in which any talented and suggestible young quarterback will find himself hounded and hounded until, in the end, he assumes the very characteristics that they mistakenly believe he possesses. This isn’t a traditional case of building someone up and tearing him down. This is trolling on an elaborate scale. This is finding a ripe target and molding him in the image of your worst bogeyman. Johnny Manziel may not have been a douchebag a year ago. But by the time the machine is finished with him, he will be.