I went on vacay right before Delta got a strangle hold and had maskless outings. But I would rather be "confused" and be a bit safer than to be as certain as Steve and possibly suffer extreme inconvenience. So I mask for myself and my neighbor and make encounters 70% safer.
Lab creation of Covid 19 is an argument that has become scientifically more robust. The animal theory has as little/no confirmation as the biblical talking snake and has remained stagnant. Deliberate weapon production has no evidence but an accident during wicked research is more possible.
When will we know? It would take a whistle blower, espionage data interception, or a discovery of 2 more segments of other unrelated deady virus.