It's obviously super hazy, but it's worth clarifying that being developed in the lab != originating from the lab.
From what I've heard on Chinese social media, there are a bunch of plausible sounding theories.
For a lot of jobs in China, it's expected that there's moderate incompetence or grift.
For example, say the lab has a bunch of extra animal samples (mice, bats, w/e). Someone in the cleaning staff could make a few extra $ by selling those samples to a wholesaler at the local wetmarket (to be turned into dogfood, etc.); maybe they only meant to sell the clean samples, but got things mixed up.
If I’m walking down the street and get surprised with a punch in the face I assume it was intentional, even if there are many scenarios in which it could be accidental.
Why not? There are multiple hurricanes every single year, but I still hear about them. Especially the ones that might affect my area.
But it might be more like: "Yet another hurricane cause by weather." Not really a story, since they all have been. The opposite, though, that'd be a real story: "Hurricane not caused by weather!"
If false, then it's yet another viral mutation / species cross over which have happened all the time throughout history.
When I hear hoofbeats I think "horses" not "zebras"...