if Dak was playing like a 4th rounder he would be sitting on the bench if he made the team at all. That's what 4th round picks generally do when they are quarterbacks.
Since 1990 thee have been 53 quarterbacks drafted in the 4th round. Three of them have made at least one pro Bowl and that is Dak, Kirk Cousins, and David Gerard.
21 of them never appeared in a game. Only 13 of them, about one fourth, started a season's worth of games, 16 or more.
Half of them lasted less then four seasons. Only 7 had 1000 or more pass attempts.
If Dak retired today, he would have the 2nd most passing yards of any quarterback drafted in the 4th round from 1990 to present.
Dak Prescott has never played like a 4th rounder and that includes any point this season.