The Texans are not a bad team, but they are an average team. Half the NFL is composed of average teams, the other half divided between mostly bad and a few really good teams. Which means it shouldn't be surprising when the Texans keep going 9-7 and dropping out of the playoffs early as long as their schedule isn't horribly difficult.
We've been blaming OB and the Texans organization above him. Now this year it's on OB alone, which will tell us what? I don't know the answer to that, but I suspect it'll be more of the same. I'm open to pleasant surprises, but expecting more of the same.