I didn't watch more than a few minutes, too much real research going on to keep up with the more fringe stuff.

But tl;dr it could be a lab escape but most virologists think it's more likely to be spontaneous zoonosis. In either case, the evidence for genetic modification or "serial passage" is very weak and the virus's distinguishing traits all fit in well with the background distribution of coronaviruses we know about. So the fixation on lab escape seems like a distraction.