First, thanks for posting the video, I enjoyed it and it makes some good points. I am not against him at 9, I personally think we go DT or Edge at 9.
Second, the last bolding (done by me) the guy said in the video that the coach only had him run two routes either a go or a curl and he was angry they didnt have him do more slants. Not that he couldnt, but he didnt (so the video did not necessarily show him much of his route running ability). I think he said he counted like 4 or 5 in the 5 games he charted. His argument was that he only really needs to do those 4 or 5 routes to be effective due to his size/speed combo.