You are essentially arguing for lab leak theory. Initially there was only one cluster of COVID and that was at Wuhan. That's why lab leak hypothesis is more plausible.
It was not the case that there were dozens of clusters all over the world and Wuhan lab was first able to identify the virus. Your argument would have _some_ validity if there are lot of clusters of outbreaks at the same time. But that was not the case. The initial cluster was only at Wuhan.