Longer passes generally have more separation (QBs don't typically throw to a receiver down feild that doesn't have a step or is open) so it stands to reason that tight window throws would be more short and intermediate. That hold true for all QBs.
It depends on the QB and WR.. go routes are generally well covered, the QB just places the ball where the WR can make a play and beat the guy by a step if he sees single coverage..
The main point though is ‘tight windows’ don’t necessarily make the case one thinks it does. On Seam Routes, it’s more difficult to place the ball over the head of the DB and in front of the safety, even if the receiver has two yards on the DB, than a quick pass in a tight window. That’s a way more aggressive throw than a quick slant.
Reality is this is a common criticism of Dak going back to his pre-draft scouting report. He doesn’t throw guys open and take risks and tends to go with the shorter routes.
But I think Dak throws the seam routes and middle routes well, because everything is in front of him and he’s generally decisive on them... that Witten pass has worked the three times this year I have seen it and the pass was on the money. He hits Dez in the slants consistently.
I think a general consensus on this board is this offense has to attack the middle more.