So you would consider that a valid reason for not winning a SB?
Individual excuses for losses are fine, but when the excuse counter keeps going up, they start to lose their justification.
Professional sports is filled with disappointing careers from players who had a lot of skill and potential where they just did not win games in the post-season.
At some point though you are what you are, and Dak is a quarterback who has not elevated the team around him to the NFC Championship Game or Super Bowl in 8 seasons despite regular season success.
Are all of the losses his fault? Of course not and I have not said they were. What I have said is he simply has not been good enough to elevate those around him to reach the Super Bowl.
At some point, you need to try something new and since just about every other piece outside of Zack Martin has been replaced, it's time to replace the quarterback.