Why not? Wuhan is the 43rd largest city in the world. Meanwhile, the earliest cases of CoVid were all connected to the same wet market. Doesn't that have a higher probability being the origin?
https://www.livescience.com/covid-19-did-not-start-at-wuhan-...
This claim has less weight if China does not share the raw data.
[1] https://www.ndtv.com/world-news/who-experts-want-more-data-f...
Lab Leak: A Scientific Debate Mired in Politics — and Unresolved [March 22, 2021]
https://www.medscape.com/viewarticle/947620
https://www.outline.com/XCTFJJ (registration-wall bypass)