[DiogenesKynikos]

RaTG13 is not the ancestor of SARS-CoV-2. Full stop.

Other, more closely related viruses have recently been found in nature (by a French team in Laos). That immediately 100% rules out all the conspiracy theories that have to do with RaTG13.

I'll also just mention that Wuhan happens to have wet markets where wild animals were sold until the end of 2019. The initial outbreak was clustered around a market that is known to have sold wild animals that are susceptible to SARS-CoV-2. That market is on the opposite side of the city (and it's a big city, about the size of NY) from the WIV.