My understanding is that the Wuhan Institute of Virology was one of only 2 BSL-4 labs in china in 2019, and the only one focused on emergent viruses. This is out of 684 major Chinese cities.
Ideally, said belief is rooted in scientific methods, of course.
But there is actually no need for this "lab! No! Market! no! Lab!" ping-pong that seems to be developing here.