In the lab scenario their lax standards wiped out 2 million people and they covered it up. In the wet market scenario, it mostly reflects on the local inhabitants doing the usual black market stuff most local inhabitants of most countries do, and the CCP can only do so much to control their people. Plus, lab source has many other possible implications that are concerning, e.g. engineering bioweapons, IP theft, more nefarious conspiracy if it turns out to be a purposeful leak, etc. Wet market is overall much more benign. Also, from an evidential standpoint, lab outbreak seems much more plausible. Very easy to connect the dots with researchers, funders, etc. On the other hand, they cannot even determine the proximate transmission animal for the wet market theory, and the supposed bat source assembly is based on a faked dataset from the wuhan lab.