That's simply not true at all, whatsoever. See for example this paper sequencing early samples of the virus: https://academic.oup.com/mbe/article/38/12/5211/6353034?logi...
The "wet market" samples are less similar to closely related bat strains than other early samples which are unrelated to the market.
The market is close to a major hospital. If the virus was circulating, it is unsurprising that a super spreader event would occur there. But saying that the market is the point of origin, and this this is "very solidly established" simply flies in the face of known facts.