How very deep. But if I'm not mistaken the original argument around Chesterton's fence is that somebody had gone through great efforts to put a fence somewhere, and presumably would not have wasted that time if it would be useless anyway. In your example, "the common practice of taking down Chesterton fences", this is not the case. The general principle is to not undo that which others have worked hard for to create, unless you are certain that it is useless/counterproductive. Nobody worked hard on making sure people could remove fences without understanding them (or at the very least I'm willing to claim that this is counterproductive), so this principle is not protected.