>>delbar+(OP)
For what it is worth, they say there is an 81% probability, based on their analysis, that it was a lab leak. That is not the same thing as "claims COVID-19 originated in a lab" - so I think the title is a little misleading - which is probably why the title actually seems to be "What is the source of COVID-19 (SARS-CoV-2)?"
>>stanri+s4
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.
"
>>delbar+A5
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'.