True, but if you close it, you can't see the list (duh) and it seemed to be useful enough for the casters to have it open for a significant portion of the stream.
Play styles differ between players, but considering that CK2's equivalents of the list (the notifications on the topmost edge) are visible all the time unless you explicitly dismiss them, I suspect that many players, especially those coming from CK2, will want to have the information available most of the time.
Again, maybe the list can be moved to a less obtrusive spot without any issues, that would already solve all the issues I have with it