It's amazing that people are still repeating this line. Dr. Shi's sampling trips were to Yunnan and surroundings, ~900 miles away. Expected prevalence of SARS-like coronaviruses in the Wuhan population was low enough that they used blood samples from Wuhan as negative controls in antibody studies. (Of course that expectation could have been incorrect; but the idea that her research group was deliberately based in a region of expected natural spillover is unquestionably wrong.)

Also, the WIV was more than 2 km from the market; the grandparent is probably thinking of a different, closer lab. The market was definitely the first big super-spreader event, but not necessarily the site of introduction into humans; the earliest cases show much less clear geographic distribution.

There's no conclusive evidence for any origin of SARS-CoV-2 yet. The ODNI report clearly leans against a research-related origin, but no one except the LA Times's "business columnist" is claiming that they "debunked" anything.