Western experts are weighing in on Chinese whistle-blower Dr. Li-Meng Yan’s report claiming to show COVID-19 was man-made in a lab — with several dismissing it as more of a theoretical think piece that offers no new evidence and includes flawed research. “One of the major arguments [in the paper] is that [the virus] is so unique, it can’t have been generated naturally, the only explanation is that it’s man-made,” Dr. Gary Whittaker, a professor of virology at Cornell University’s College of Veterinary Medicine, told The Post. “I would push back on that.” Yan’s report, published late Monday on the...