To correct the other guy, he's right in what they did, but misleading in the implications.

Before, they would record the death and report the death on that day. This would mean the current number = "all recorded deaths to this point." This means that historical rates would be a little wonky with delayed reporting periods (i.e. weekends), and you could only really analyze trends through heuristics like 7 day averages.

Now they back-date the reporting to actually match the date of death. This means the historical rates are really good and a little more useful, but is also means that the "recent" rates are entirely useless. You can't look at the most recent 2 weeks and say "The rates are low now," because that information is incomplete.

FWIW, I saw a chart once on the CDC site that also used death-date reporting. It just had a huge disclaimer on it explaining that the most recent weeks will look lower than reality due to incomplete data. Didn't stop people from linking it to me insisting that the death rates have fallen significantly, nor does it stop people from making bogus charts like the one OP linked.