Your premise and argument is flawed. Nothing you wrote proves it was not made in a Wuhan lab.
I am not saying it was I am saying you have proven nothing. I think actually your writing supports how it could have been made in a lab.
I think there are other ways that it could have been made in a lab not by gene tech but just natural tech to let an existing Corona virus mutate in a variety of hosts until it became capable of infecting a human host. That would mean exposing humans to the viruses in development to see when success was achieve. That could also explain how it could have escaped the lab. An infected lab subject with a false negative test was allowed to leave the lab.
Just the existence of the Chinese Lab doing secret research along with labs in the U.S., Europe, Russia, Israel, India, etc. doing similar research calls for some international monitoring agency like the IAEA to make sure nobody is developing and proliferating deadly biological and chemical weapons.