
Because he had a bad season on a terrible team after he missed an entire offseason?
Kirk Cousins should have been starting at the beginning of this season when RGIII just wasn't ready. Could have prevented a lot of this. By the time RGIII could move around a bit the season was for all intents and purposes over.
Because he clearly can't run an actual offense. RGIII being able to move or not move has nothing to do with it. He simply does not have the innate skills a QB develops as a pocket passer. He doesn't make pre-snap reads. He doesn't read defensive development. He doesn't work through progressions and receiver route trees. He is not an NFL QB. He is an option QB that got away with it last year because of the Pistol wrinkle formation. This season, defenses have adjusted. Hence why Kapernick got off to such a poor start. Once he started developing more pocket awareness and ability, the 49ers offense started to click.
It's pretty clear that giving up so much for Griffin was a mistake. He will not last that long in the NFL. He is going to struggle this year and probably most of next year, to learn how to become a pocket passer. And ultimately, you will have to find some way to adapt his abilities instead of his abilities augmenting the current status of NFL offenses. This is a pocket passer league. By giving up so much, the Redskins have hurt themselves by not having any talent, which was only more detrimental by the salary cap penalties. As much as I love the idea of taking Griffin and molding him in to a passer, this team would have been just as suited staying back and taking Tannehill, Foles, Wilson, or even Cousins. Heck, they take Foles or Wilson in the third round, you're looking at some very healthy 2012, 2013 drafts. Blackmon, Clairborne, Kuechly, Dontari Poe and/or Barron, would have all been on the board in the first round. Janoris Jenkins or Alshon Jeffery were there in the second. Then in 2013, we would have had a Top 15 pick, most likely, leaving you with some options to improve the offensive line, grab a receiver, or take secondary help
2012: Poe and Jeffery/Jenkins
2013: Hayden, Reid, or Trufant/Pugh
That's an impressive gathering of talent for a team that has so little. We have a true NT that can really push the middle, leaving Cofield to play DE. This would pretty much vastly improve our defense. Secondary or receiver improvement as well. Our QB is finally developing into what we hoped and now he has weapons to throw to, an offensive line that gives him more than 2 seconds, and a defense that won't automatically start him 28 points in the hole.
Griffen is going to get at least one more season, I wouldn't expect much more than that though. He's here for two more years with a team option for the fifth that has to be exercised after year 3- if he sucks next year would they do it? You also have cousins who is only here for two more years, if you give Griffen next year, then you get one year to find out if you are keeping cousins (at a then very expensive price since he'd otherwise be a free agent). Or you can waste another high draft pick on another QB and start again (because 7 picks on QB over that past four years some wouldn't have been enough).
Yes, we know he will be the guy. And given that we gave up so much for him, I understand it. But you know that as soon as Griffin struggles next season, and he will, we'll be clamoring for Kirk if he doesn't get traded.