This article points out that a lab outbreak could have happened in the United States and many places in the world. We need to avoid demonizing China over this if we want to ever find out the truth and learn how to prevent another pandemic outbreak.
[1] https://web.archive.org/web/20200214144447/https://www.resea...
And that, more than anything else, is why we should be suspicious of "exotic" theories like human intervention. It's an extraordinary claim, and it requires extraordinary proof. You seem to be arguing the opposite, when Occam is clear that we should be betting on natural evolution.
Researchers have gone to a particular region of China and otherwise gone to great effort to find these particular bat viruses. I agree it is possible that they could be ignorant of the fact that the virus is in their own backyard. But it must a lower probability event that people got infected by such city bats given that we already know for certain the labs were transporting the bat viruses directly. Additionally, I would be surprised if they have not been testing nearby bats for such viruses since the outbreak happened. If they got a match it would be highly publicized.
There have been examples of bats excrement contaminating fruits on fields as a transmission chain. Accounting for these, often undiscovered, interactions is extremely difficult in terms of probability.
> we already know for certain the labs were transporting the bat viruses directly
In research from 5+ years ago, research which warned exactly about the fact how the virus already had overcome critical barriers to infect human cells [0]. A very plausible interpretation here can also be that said research was a warning about things to come, and is now mistaken as the original cause for it.
[0] https://www.nature.com/news/engineered-bat-virus-stirs-debat...