I never said anyone can't say something critical of Dak, so it's not a point to me. I just expect the criticism to be fair minded and in the proper perspective. For example, I have no problem with anyone saying Dak blew it on the pass to keep a drive alive in OT last week, or that Dak played poorly against KC. I'm less inclined to accept someone pinning losses entirely on Dak, or even one guy regardless of who it is, and particularly in games where the teams scored a lot of points overwhelmingly on the strength of the passing game.
I think what you may be missing is the distinction between being critical of Dak, and blaming everything on Dak. I think most people can accept a comment like "Dak missed a key throw at this point in the game" or "Dak had a subpar game this week", but that's very different from comments suggesting Dak is the reason the team can't win, or saying Dak was the reason the team lost a game in which it scores 30+ points and Dak's passer rating was stellar.