There are many variants of Occam's razor, but one commonality among them is that it is for comparing hypotheses that predict the same data (namely, the the simpler one should be preferred).

But in the case of COVID-19 lab escape versus zoonotic origin, the latter doesn't predict that the Chinese government and EcoHealth Alliance would attempt a coverup of the virus origins, so we really aren't talking about two hypothesis that explain the (same) data, and therefore this isn't really an appropriate candidate for the application of Occam's razor.