This is basically reiterating the blog which said 'science is often a matter of probability..... there was no smoking gun proving a specific origin, and the team has had to rely on scientific inference', is it not?
Then the investigation, tracking the emergence of covid-19 couldn't nail it's origin via the epidemiological evidence, had to look at the molecular evidence and then combine all the evidence and knowledge they had to ascribe probabilities?
They can't say for sure it wasn't something that escaped from a lab, since they can't nail it down, but knowing how these things progress and mutate and analysing at a molecular lever, they can say it is very very unlikely. By far the most likely is a natural zoonotic pathway, probably via intermediates, with a small chance it could have come through the food chain. Scientists can't definitively rule the lab origin theory out until the actual origin is found, because that is how they work. The rest of us probably could, though and the bookies would snap your hand off on the odds of anyone putting their money on the lab theory.