Right.
Since posting my reply, I went through a few more threads discussing/lashing out (lol) the same issue users are having. It sounds like the main culprit is this old post: Switching from Boards to List View (and vice versa), which you just confirmed. It certainly sounds like they’ll be moving forward as planned so I guess it falls on all users to decide how much we dislike this change and whether this is going to be our deal-breaker or not.
Like me, yourself and many others out there, I think the question now is going to be whether Asana will at least consider adding an ability to switch between a task and a header…