I really wish they would update all the dates and numbers instead of putting them all in the current bucket. For all of the data, republish the all the charts and metrics for the last two months with the data in the correct slot.
They could publish both "the current 7 day average based on when we got the number" and "the updated 7 day averages for the last 2 months based on when the tests/deaths actually occurred".
That would tell us more about last month than we know now. Was last month better or worse than we thought? Were it's numbers mostly from the month before or are we just now catching up to what was really happening back then?
For instance, picking on this example, those 3,800 mean sometime more than two weeks ago was worse than we thought. And, we don't know if we're still that bad or not and will not know for a few weeks until now catches up. Without republishing them back in time we can neither ignore the 3,800 or understand what it means today. I'm assuming there's no way to eliminate all the lag in all reporting, might as well accept it and adjust the metrics to deal with it. Even if this means that reading a report today about yesterday means that report will change 60 times over the next two months about what was really happening yesterday as it all catches up, no hanging on to yesterday's number as an absolute.