In all honesty, the whole lab leak hypothesis has never had any real substantiation. It's always been steeped in speculation. The truth of the matter is that coronaviruses have existed for millennia, they are zoonotic, and they cause disease of varying severity regardless of strain, variant, or reinfection. The lab leak narrative only serves to promote more fear mongering and provide an excuse for the unprecedented attention to and tracking of a mere flu-like virus, burying the very thought of a snowballing COVID-19 psy-op with more information glut. The same sort of hysteria would have easily been conjured up with a rhinovirus, adenovirus, or enterovirus (other common cold viruses that also cause flu-like illness and death) using the same unprecedented attention and tracking. In fact, an attempt was made with enteroviruses causing acute paralysis in mid-2020. It didn't gain much traction. Reading through literature, such cases were documented before 2020, though not worthy of major headline attention until the COVID-19 hysteria.