I liked the call as well, but when a penalty then put the ball on the 7 yard-line, I thought they might revert back to a kick. The odds of scoring from the seven are significantly worse than the odds of scoring from the two. And, although the outcome was meaningless to Houston, Tennessee and the other Wild Card chasers cared very much.
It cuts down on the chances of a bootleg working, but if you’re going to pass the ball, it may give more space to get a guy open.
Had it counted for the Texans, I’m sure they would have kicked.