I don't know.How many of those evolving viruses were part of work being done in a nearby lab where the original virus was being enhanced to better infect humans?
I've said this before and I'll say it again. I don't know where it came from. Could it have been a lab leak? Yes. Could it have been from simple virus evolution or zoonotic spillover? Yes.
I go with what's most likely and where 99% of viruses have originated. What I don't get is that it seems like the lab leak theory folks don't consider it a possibility that it ISN'T a lab leak. They seem more set in their stance imo.