I don't disagree.It didn't matter what Lou was gonna do because that defense is that lacking in talent.
Next to the Panthers the Bengals probably have the least amount of talent.
Which makes the scheme all that more important. He chose to be vanilla because of the lack of talent. Later in the season he chose chaos - which is what he should have been doing all along.
He got fired because the players were shitty/inexperienced. But he didn't do himself any favors by being so bland.