What they did these last months should be the last nail in the coffin.
More like a health organization they act like a political one taking sides with China and ignoring/censoring Taiwan even if they managed to control de spread of the virus.[1][2]
And if that wasn't enough, they actively insisted that all the measures we're taking now were pointless.
Why would anyone want a health organization that only cares about politics?
[1] https://foreignpolicy.com/2020/02/28/taiwan-who-coronavirus-... [2] https://www.thenation.com/article/world/taiwan-who-coronavir...