[firethief]

They are defining the term "confirmed case fatality ratio" as something different from the CFR that cannot be directly compared. The way they say it is misleading because people will parse it like: "{confirmed case fatality ratio}, or CFR", but they're actually saying "confirmed {case fatality ratio, or CFR}". You can tell because CFR doesn't have enough letters to have "confirmed" in it, and it usually has a different definition. That's also why they never call it "the CFR", they call their thing "this CFR" or "the confirmed CFR".

Their confirmed CFR is not a good measure of anything because the conversion rate to CFR depends on average time between case confirmation and death. It effectively assumes that everyone diagnosed but alive will recover.