This documentary was mostly the director sitting at his computer while narrating rambling thoughts on everything from the Lab Leak, 9/11, AIDS, etc., many of which are spurious and only serve to discredit the arguments presented that do have a factual basis. The most convincing evidence for the Lab Leak theory get lost in the sea of dubious claims and speculation. Instead of slowing down and making a solid case for the lab leak theory (or why gain of function research is too risky), we get a few bullet points for each idea before he's moved on to the next one. The 3 stars are mostly for the former director of the CDC Robert Redfield and investigative journalist Emily Kopp, who were interviewed extensively in this documentary.
If you are curious about the lab leak theory and want some convincing evidence, I'd recommend the book Viral by Matt Ridley and Alina Chan, reporting by Emily Kopp at US Right To Know (who is featured in the documentary in snippets, but neglects her most significant contributions), or the SoHo Forum debate "Did Covid Start in a Lab?", which can be found on YouTube or the audio as a podcast.