Play 1 that is highlighted , James down blocks very well. The bloggers comment that "the lineman didn't stick his block" is completely wrong, as the strong side defensive back gets upfield to turn the play in and its physicially impossible for the OG pulling from the opposite side to seal the outside. He actually does all he can, which is kick out the block as hard as he can and then McDonald needed to block the LB, so Bell would turn it up. Well played by the Jags corner, McDonald didn't react well and the video breakdown from the blogger is incorrect.
The 2nd video, the blogger singles out Nix, Decastro and Finney, but the play is run to the left A gap, while Nix is the lead blocker, DeCastro is in the right side B gap and gets to the inside shoulder of the defender and Finney is in the right side C gap and doesn't effectively seal his defender, but he is 3 gaps over from the play. The DE that Foster is blocking in the B gap, comes off his block to make the play, while the LB squeezed down the gap by blocking Nix well. Again, good defense and a better block from Foster and Bell can perhaps hit the seam, but the blogger is calling out the 3rd and 4th defenders, not the point of attack.
I just stopped watching the videos after that.