We’ve been searching for intermediate animal species for 15 months and none have been found (SARS and MERS were found quickly), SARS-Cov-2 is actually quite bad at infecting bats, and the key thing: arginine-based (i.e DNA amino acid, not RNA) furin cleavage site on the spike protein (widely regarded in the GoF research as a great way to increase human infectivity).
To say nothing of the incredible coincidence of the WIV.