I think people are selling Lock short. He had questionable coaching in Denver and he's finally getting good coaching here. He just needs reps and coaching. He looked really good vs. Cowboys, including moving around out of the pocket. Decisionmaking and accuracy looked good. He knows why he f'ed up in Denver, the bad decisions and turnovers. I'm sure that's been a personal focus for him his whole time here.
We won't know the truth about his progress until he gets his first regular season opportunity. He's been watching and learning from Geno and others the whole time. Pete & John gave him a decent backup QB contract, well above vet min, to stick here. If they didn't value him as being potential starter quality, and a legit NFL backup, they would have lowballed him and he would have left. Drew also knows his best shot is in Seattle, with a system he knows, players he knows, and coaches who believe in him. He knows it's Geno's team this year and no question he is targeting next season's QB competition and testing free agency.