We know it had a leak; workers from the lab got sick with COVID symptoms a month before the initial cluster of infections.
At least some of the people from the initial cluster had no link with the Wuhan market.
COVID has only been found in human samples from the market, not in animal samples.
Conveniently all databases and files regarding the research got deleted and lost.
Instead of it originating from the lab 1km away from the wuhan market, researching exactly this particular form of sars, we have to believe a bat from 3500 miles away ended up on the market, infected an unknown intermediate species, without any trace of animal being infected, immediately jumped to people and became increasingly more infectious.
I fail to see how this could ever be more likely.