You will be hard pressed to find a Zen teacher who would deny that practise is Zen. It does certainly not "lead to Zen". E.g. "Enlightenment and Practise are one" (Dogen), "There is no Zen master in great (Sung) China", the frequent warnings against step-ladder Zen, the idea that Zen is not useful and nothing is gained, "there is only the way, beginning, middle and end" etc.

You don't need to practice to "get to Zen".

The point is this. You can say that practice is Zen but in that perspective everything is Zen because everything is practice.