If you read the original report, it basically boils down to: we trained a classification model, and it said that X% of the people posting about QAnon on Faceboo

If you read the original report, it basically boils down to: we trained a classification model, and it said that X% of the people posting about QAnon on Facebook are Chinese and Russian. How this classifier works or what features it uses is not explained. Whether the classifier can tell apart a person in mainland China paid by the government to post and a Falun Gong adherent in the US is also not discussed. QAnon is heavily anti-Chinese, and Falun Gong has heavily promoted QAnon, so it would be surprising if the Chinese government were supportive of QAnon conspiracy theories.