The useful thing that comes out of understanding countersteering is understanding how to alter your line in a turn.

Push down more on the inside handlebar, the line tightens. Let pressure off the inside handlebar the line widens. Once you get this, it's easy to alter your line in a turn.

If you don't (at least on a subconscious level) you can lock into one line that you picked on the entry of the turn and find it difficult to alter your line mid turn, which can be a serious problem.