This was a comment in the article I found interesting and mirrors what I have said many times …
The perception of Prescott's accuracy suffers greatly from one or two bizarre misses per game. Aside from those small handful of off-target throws, Prescott is largely an accurate quarterback, particularly with regard to placing the ball away from defenders over the middle of the field. He isn't quite in the elite tier of QB accuracy, but he fits somewhere in the back of the top 10.
He no doubt has a miss or two a game that is just a head scratcher, but I think people tend to take moments that are very noticeable and assume they are typical, and that isn't necessarily the case.