Earlier quoted context omitted.
From their Twitter account: "Probably our most surprising finding to date: COVID-19 has likely originated in a lab. A probabilistic analysis shows the proximity to a major coronavirus lab and anomalies in the genetic code are too unlikely for SARS-CoV-2 to have developed naturally. " https://twitter.com/Rootclaim/status/1343207878325383168
The problem here is that "anomalies in the genetic code" is, I believe, their claim, not fact, but presented as a fact along with established facts, which may be interpreted as a deliberate attempt to spread essentially 'fake news'.
No idea how credible that analysis is, but it seems to me like it's done in good faith.