I see both sides of this, tbh.
Other QBs don't currently have this benefit. Luck is a perfect example. Always brought up when people talk about Russ for some reason. He's a stud with a couple weapons... but who did they march out at RB in the AFCCG? Dan Herron? Zurlon Tipton? Vontae Davis is the best player on their defense. For the Colts to win he literally has to throw the ball 40 times. Handing the ball off to Zurlon Tipton 25 times ain't gonna scare anyone. Colts defense allowed 27+ points 8 times last season. 40+ points 4 times. I don't care who you are... winning those games for any QB would be tough.
The system matters. Russ is perfect for what they're running in Seattle. There are games where they take the training wheels off and Russ goes OFF (I had the
face for the... ********? game last season when he went for like 300 in the air and 100 on the ground). They'll follow it up with a game where Marshawn is featured and Russ isn't asked to do much. It's not bad by any means because it works. Seattle knows what they're doing. Why risk it when you know what your bread-and-butter is? As a Steelers fan I know you can understand my Ben/Russ comparison (not size, player, skill but situation). Ben came in with training wheels and now he's an elite NFL QB. It doesn't make Russ any less of a player, but it doesn't put him among the elite as his position. When the day comes that the defense ain't exactly what it used to be and Beast Mode is on the beach eating skittles -- that's when we'll see what Russ is made of. I'm confident that he'll be fine.