So your eyeballs tell you he is among the best but not great.... aren't the best the great ones?
Mahomes, Wilson, Rodgers, Brees, Stafford, Brady, Ben - he isn't in this tier of passers right? These guys carry their teams.
So then we get to Watson, Ryan, Goff, Wentz, Garoppolo, Baker, Cousins - I could see you putting him here? I could even buy this argument, but as a passer I would put him bottom half of this tier.
My eyeballs tell me he isn't among the best as well. My eyeballs tell me his team doesn't look to him to even be the best player on his own offense.
What does he have to do? Again - those couple few passes a game that he misses and misses badly. The ones that kill big drives. Turn those into completions. Then we can start moving him into the conversation with the other actually great passers in the league. Get to a place where Dak is the goto for the team's offense. My position would gladly change.