You are missing the point. Harbaugh didn't make the decision to punt based on any input from Jackson. He literally defended it by saying he trusts his defense in that spot.
Oh really? Based on what?
I know Lamar said he was cramping, but I don't buy it. The offense was stagnant. He cramped handing off the ball to Henry as he fumbled it? Then watching Josh Allen engineer a comeback?? On the drive in question he handed off to Henry, pitched the ball to Flowers on a jet sweep, then stood in the pocket and threw a 6 yd pass. He is a well conditioned world class athlete. Yes at the the end of that play, he took a viscous hit, so maybe he was a bit shook from that. If that's the case then take the damn timeout. The reality is Harbaugh made the decision in isolation to punt. As Tony Soprano would say.. end of story.