Time is the cornerstone of delusion. Because there is persistence, things can exist. Because there are things, events can occur in time, they can occur in the world, they can occur in your life. And so, the original wholeness of our experience is stretched and dualised.
For Dogen, what is primary is exertion, expression, full dynamic functioning; the exemplar of which is zazen. It is not that time and space do not exist. Rather, they are aspects of full dynamic functioning.
It is our duty as Buddhists to save the beauty of this from being crushed under the railway tracks of linear time.