Agreed.
What also is failed to mention is that if Pollard was indeed supposed to leak out as an outlet for a check down by Dak he was waaaaaay to slow in turning around and facing Dak to be a target.
You block a blitz or throw right past it.
If Pollard just swings right and turns to Dak, it's a trivial throw with acres of empty green in front of Pollard.
That should be basic football for a back. If there are no defenders in front of you, don't try to block, just give the QB an easy target. It's a two on one scenario. Separate the two and let the defender choose, and give the ball to the guy he doesn't choose. Automatic win. If you try to block and fail, the QB is humped.
From the sounds of it and the look of it, that was the design, and that was what Dak expected.