A word of caution. It is true that much is unknown about 2019-nCoV. In this situation alt-news guesses thrive, and research scientists can be found to advocate persuasively almost any hypothesis. In this situation news outlets will report stories that seem interesting or in line with their prejudices. So while Lyons-Weller has some expertise, we don't know this is authoritative, and his ratings of the various hypotheses seem like his view, rather than what is likely true.
Alan Smith had already posted sine links, on the first and second page of this thread, to the Indian preprint and Lyons-Weller blog where one can find all the argumentations for this stance. Anyway, With some Googling you will find similar expert opinions that the artificial origin of the nCov2019 is suspected.