1/ This is the definition of a straw man argument. The question is not whether #sarscov2 was “manufactured” by China, but whether it might be a modified version of a bat coronavirus called RaTG13 that the Wuhan lab is known to have had in its possession...

2/ The modifications could have occurred through what virologists call “gain-of-function” research and don’t necessarily require explicit genetic insertions -
@mlipsitch
’s excellent discussion of (and argument against) the practice is here:

3/ I have avoided talking about Dr. Li because both her claims and the politics around her are complicated. But she is far from the only virologist raising the issue. Check out
@ayjchan
for a more nuanced perspective. (Or don’t - if you’d prefer to keep your head in the sand.)