Lazy article. You cant evaluate positions in a vacuum. Our tackles began to fail in part because the interior play was so atrocious. Blythe was incredibly smart, but woefully undersized. As bad as our interior was, spacing is forced to tighten up, offsets change, and a tackle that is young and playing more games than he ever has is doubly taxed because he has to line up further inside than he should to help the guards, who are tight to help the center. There's a ripple effect.
Better Center play means better spacing, means fewer doubles, means better inside to outside play. Means a much improved line.
This is just lazy analysis.