The first author, Michael Worobey, was skeptical of a market origin. So he did what scientists do, he tried to prove the hypothesis wrong....rigorous studies in landmark paper after landmark paper kept showing the market as the origin of COVID-19.
Yes “our analyses indicate that the emergence of SARS-CoV-2 occurred through the live wildlife trade in China and show that the Huanan market was the epicenter of the COVID-19 pandemic” pubmed.ncbi.nlm.nih.gov/35881010/