When you're an active FH member for at least a couple of years, you get a sense of who is basically negative and/or has hidden agendas. Usually that SpideySense doesn't disappoint.
It's pretty obvious that there are some butthurt members upset that Rosen even exists on our roster because they fear his doing well will screw up any chance of getting any of the next flock of unproven college QBs. Since history repeats itself, and I have advocated letting Rosen get the lay of the land from the sidelines while the OL gels as best it could, these member would like to see Josh thrown into the fire with an ostensibly terrible OL, knowing that last last season his confidence and resulting performance will falter with each passing sack.
Also, one of my best friends has had 50 yard line seats in Glendale for about 15 years and while disappointed with Rosen, saw a lot of good, saw much fortitude and respect /attaboys from teammates and thought he did better than most of the team and coaching around him. Eyewitness from the 50 yard line, not some TV broadcast.