of course the irony is that it doesn't even matter. We already know China (1) tried to cover it up, screwing the rest of the world, and (2) has poor wet market sanitation practices that seem designed to cultivate these kinds of diseases. Those issues are already bad enough.
Honest question: Is that a fair/accurate generalization to make? If Hell's kitchen episodes and accounts from food industry workers are any indication, sanitation practices in food handling establishments elsewhere are not necessarily always stellar either. And surely China has some equivalent of WholeFoods?
One ought to be careful not to attribute a characteristic differently depending on whether they belong to the class of people in question[0]. If it turns out that reality is that some chinese establishments have poor sanitation practices just like some US establishments do, and it just so happens that they got unlucky (perhaps partially due to not-so-directly-related aspects like zoning law differences or propensity for higher bat populations due to local fauna/flora ecosystems), the us-vs-them blaming game doesn't necessarily have as strong legs to stand on.
The term itself is somewhat ambiguous [https://en.m.wikipedia.org/wiki/Wet_market] in that it can cover both cases. However the style common in many places in China (and many other areas in east Asia) is one where there is no refrigeration or adequate sanitation. To avoid spoilage, animals are brought in live and slaughtered as needed to provide meat. It can be when a customer picks it, or when needed to stock a counter.
These styles of market are problematic disease wise because it brings many species of animals together in crowded and often unsanitary conditions, high stress, with humans in close contact with them, and lots of people and animals coming and going constantly.
If you’re looking for a way to encourage Zoonotic disease, it’s hard to do better.
Have you seen one in the last decade? It's changed dramatically, and ranges from an open-air grocery store to yes something more depressing like what is in that wiki article.
Cities have been improving, and I don’t doubt Covid is helping. SARS seemed to help a lot in Singapore.
The comparison to Whole Foods with consistent refridgeration, regular clearing, limited supplies, regular health inspections still seems unlikely anywhere outside of the major metros.