Scientists often refuse to believe each other, and will argue with one another till the crack of doom. I have also heard it said that many scientists, like sheep, are fearful of supporting evidence that appears to rock the boat or upset the status quo.
So many of them are dependent on grants for their research from various universities...they will not wish to seem to rebel against the herd.
However, I will say this...the Chinese virologist who published this paper has had severe personal consequences for writing it. Her mother has been arrested. One would not think she would publish these things lightly.