There has been some evidence of how the handlers of that laboratory's research went out of their way to shame anyone who'd suggest it emerged from there in the beginning, followed by mainstream articles noting that we simply can't rule this option out, and that the likeliest scenario is that some workers got accidentally infected and became patient 0

My "very likely", however, doesn't come from there. It's more of a statistical statement. What is the likelihood that a quickly mutating virus will appear next to a laboratory that specializes in quickly mutating viruses and not have originated from there? The world is big. The chances of that happening are very low. Therefore it's very likely that it comes from the lab