It may be true that other states don't want to antagonize them, and that may also be why we don't see enough emphasis placed on how absurd it is that China has allowed these wet markets to exist so long. Imposing a basic set of health codes is a very fundamental task of any government, and their inability or unwillingness to do so does not reflect well on them.
If anything, one reason why the China hawks may prefer the lab leak theory is because it makes China look more threatening than the alternative: the we-couldn't-enforce-basic-health-codes version of the story doesn't mesh well with the image we have in the West of the CCP as an all-powerful Big Brother that has complete control over every aspect of their citizens' lives. It instead projects a CCP that can barely perform the minimum functions of a state, which is harder to be afraid of.
If anything, one reason why the China hawks may prefer the lab leak theory is because it makes China look more threatening than the alternative: the we-couldn't-enforce-basic-health-codes version of the story doesn't mesh well with the image we have in the West of the CCP as an all-powerful Big Brother that has complete control over every aspect of their citizens' lives. It instead projects a CCP that can barely perform the minimum functions of a state, which is harder to be afraid of.