This shows your 'problem.' You want to hold the QB accountable for failure by the OL! Guess you're not into holding everyone accountable for their own play, huh?
Watching film after a game, when the RT gets whipped on a play, coaches don't ignore that and go, qb - that's your job to avoid all pressures given up by the RT...you're making HIM look bad! LOL!!! No, the players screwing up get called out. Now...not every 'sack' is viewed the same. If Mariota 'felt' pressure that wasn't there, ran and got caught behind the line for a 'sack,' that's on HIM. When there's pressure, that's on each lineman, Mariota's movement in the pocket is on him, receivers getting open or not is on them. Notice we upgraded the OL and receivers. Clearly, the Titans disagree with your assessment!
LOL! Please define 'horrific' pocket awareness? I could see someone not having any...but how would they have horrific?