The Chinese didn't do anything that we wouldn't have done. In fact, they took better steps than we did, as far as the pandemic is concerned.

Of course the dude had concerns, anyone with half a brain would explore all of the possible origins and theories. But the lab leak theory is just that - one theory that could explain the situation at hand.

The problem is that too many people have put far too much stock in the lab leak theory to the point that it's being treated as the most likely source of origin, but that's just not what the evidence says.