IOW, his evidence doesn't disprove that the SARS2 outbreak is related to a lab leak from the Wuhan lab. At best, he shows that a related coronavirus also broke out in Hubei province some months earlier. But while genetically similar to COVID19, it wasn't COVID19. At best, it was a precursor strain, but lacking the mutations found in COVID19, the Hunan strain did not reach pandemic status and fizzled out.

Also, the reddit post focuses heavily on debunking the meat-market theory, but meat-market super-spreader event has been debunked for over a year (and had been by the time of the post). The reddit post suggests that a Hunan seafood market was the actual source of the outbreak, despite the fact that the Hunan seafood market is not close to bat habitats nor does it have sellers selling bats. (Note that the Hunan market theory has been advanced by China because the market does sell frozen seafoods imported from other countries, and China currently claims that COVID19 was caused by imported frozen food.)

Other reasons to treat the "debunking" in that reddit comment with a boulder-sized grain of salt: it mixes up the Wuhan and Hunan food markets; the timeline asserts that COVID19 could not be Wuhan-based because was found outside of China by the time of the alleged food market superspreader event, but this timeline actually fits with what we now know about COVID19: that it had already begun spreading in humans by the fall of 2019; one of the big revelations following the WHO report was that multiple Wuhan lab staff were infected with COVID19 in early fall 2019 with the strain that ultimately reached pandemic status.

The lab-leak hypothesis does not assume that COVID19 was man-made. It assumes that it leaked from the lab due to negligence or failures in safety protocols.