I don’t think it’s fair to be so critical. While I am very disappointed by this as a user, it sounds like this is a real technical issue that gave them no choice, and they are trying to find a workaround. And of course, the reviews API has often broken in the past, so it’s not hard to believe that it would be straining under the load.
P.S. I just realized that even if I manually track the number of reviews each day for my log, there is no way for me to get accuracy data any more. I can’t even try to calculate accuracy manually because the session summary page is gone too.