I remember it differently as not a "lab leak hypothesis" but a claim that the virus was not from nature but was a man-made virus, to wit:
"I can present solid scientific evidence to our audience that this virus, COVID-19 SARS-CoV-2 virus, actually is not from nature. It is a man-made virus created in the lab."
"I can present solid scientific evidence to our audience that this virus, COVID-19 SARS-CoV-2 virus, actually is not from nature. It is a man-made virus created in the lab."
— Dr. Li-Meng Yan on the Tucker Carlson show.