You still aren't telling me what sets him apart and makes him irreplaceable.
You're just doing what I said.
What makes him better right now than an off the couch Joe Flacco?
For starters I think Dak's accuracy and ball placement is a lot better than his critics think it is. The TD to Cooks today, for example. He also has a deep understanding of this offense and is a lot better at reading defenses and coverages than people think. A lot of QB's never get it, and Dak does. He has the arm to make every throw and he can still extend plays and hit targets on the move.
If you want his weaknesses, it's the same for a lot of QB's. Under pressure he often fails to see the entire field. His mobility is still good, but it's not as good as earlier in his career when the Cowboys could run more read-option plays and designed roll-outs. And while his mechanics are good he will still miss the occaisional pass, usually too high.
The bottom line is Dak is a very good QB that is just below the elite tier. The guy has a 30-7 TD-pick ratio, bad QB's don't do that no matter the opponent. Flacco was great today, yes, but the Texans weren't covering anybody. Even Zach Wilson would have lit Houston up today.