I think Andy Reid was shaken because he knows how bad that almost was.
Memo to OCs around the league: don't run your star QB into a pile of defenders to gain a yard. Risk/reward is not worth it. Guys are going to hit extra hard in the playoffs, and if your QB appears dazed at all he's done for the game. That's added incentive.
If they ran the RB up the middle on that and end up punting they still have several drives with Mahomes later on and ice the game later.
"Take what the defense gives you" isn't always exciting, but it works most of the time.
If it's 4th quarter of the Super Bowl, then OK. 3rd quarter of a divisional game that you're going to win anyway is dumb play calling.