There definitely is some kind of unconscious decision-making. Consider also the times you're driving and arrive at your destination and don't remember consciously choosing to take the turns you did. Also relevant I think is ideas like flow and muscle memory, these spaces where you become so good at doing a thing or so used to doing the thing that you can do it at some unconscious or subconscious level.

But I think these unconscious decision-making spaces are evidence against the theory at OP's link, because they show we can tell the difference between conscious decision-making and unconscious decision-making. We have an established concept of mindless vs mindful action, and conscious minds can tell the difference on reflection.