Because the author engages directly with the core point Dijkstra made, and proposes a new abstraction which parallels with that core point. The author does so in a clear and thoughtful way which cannot be dismissed out-of-hand.
And yet misses the point entirely, presenting non-original work that only acts as a band-aid on a symptom, rather than dealing with the cause (which is not related to concurrency constructs at all).
