Twitter disputes State Dept claims China coordinated Covid-19 disinfo accts

"According to Twitter, they have instead found that numerous accounts belong to government entities, nongovernmental organizations, and journalists. The review was ongoing, the company said, noting that it planned to follow up with the GEC on its findings."

How do they know who actually posts to these Twitter accounts? If I was trying to create a disinformation campaign, it wouldn't be difficult to use IP addresses scattered across different countries and IP banks.

The Chinese government has almost unlimited resources. It wouldn't take much to buy IP banks, phones for verification, and pay people to post.

Original title was too long. It was:

Twitter disputes State Department claims China coordinated coronavirus disinformation accounts