How can you not correlate to some extent the lack of a run game at Seattle and Alabama in back to back years? The one common factor is Ryan Grubb. Seattle did a complete 180 this year after he left. He was also canned after 1 year in Seattle so obviously they thought he was at fault somewhat. Also, who that watched this year play out thinks this guy has any clue what heās doing? The play calling is absolutely horrendous at times and seems to have no purpose at all.
I think you're conflating "not running the ball enough" with "can't run the ball". McDonald wanted, from what I understand, to run the ball more often. He made the change. But there seems to be this notion out there that the Seahawks couldn't run it under Grubb. That's false. In fact, their YPC was slightly higher under Grubb than it was this season under Kubiak.
And I'll give you that Grubb had his struggles this season... but what SEC OC doesn't have them at times? And it's certainly worth adding that they were limited because of certain issues, and one can argue how much those issues were their own fault (other than injuries). But most all of the OL and RB contributors (which turned out to be the weakness of the offense) were recruits from the previous staff, for a previous scheme (speaking mostly of the OL). And if you want to think Grubb is a trash coach with no clue, that's fine. But the fact is, he's a good OC. Very well respected by his peers. That doesn't automatically mean he'll ultimately be a success here (same for DeBoer)... but the guy is a good coach.