Looking at your own reference from (the incredibly anti-China) National Review it was only Dec 25 that hospitals started taking it seriously (ie, they quarantined staff) and Dr. Wenliang sent a text about it on Dec 31 to colleages.
China notified the WHO on the same day (Dec 31), and gave infection numbers on Jan 3[1].
As someone who spends quite a lot of time trying to track down data in Australia I'd say 2 day turn around on the data isn't too bad.
I think people who want to blame China for this will, no matter what. I'd note that news on infectious diseases that didn't originate in China often took even longer to be widely known (eg MERS, Ebola outbreak, Zika outbreak)
[1] https://www.who.int/csr/don/05-january-2020-pneumonia-of-unk...