He does? He has said many times he was going to get better then didn't. Remember signing day on his current contract when he said now was the time for a super bowl? Yep, still waiting for that too. But hey, this year they were too tired to show up for their wildcard game.
Dak did do better. Much better in 2023 compared to 2022. What have you been watching? As for the playoff game, you only have those 2 INTs to go by, yet Kurt Warner explained why those 2 INTs happened. Sure, Dak had a few other mistakes, but considering he had absolutely no run game whatsoever for the 3rd playoffs in a row, and only 1 legit WR (which the Packers took away), Dak did as best as expected considering he was under pressure half the time and sacked 4 times compared to 0 on Packers QB Jordan Love.
Dak most definitely was not the reason for playoff loss. Give him a better Oline, another WR weapon to help take heat off of CeeDee, some kind of a rushing attack, plus much better receiving route designs, you will see Dak shine during the playoffs.