I think he was referring to the GPU switching software to make Optimus work on Linux.

https://wiki.archlinux.org/title/Bumblebee

I’m not sure why people are so quickly disregarding this theory. The Biden administration viewed that both the lab leak and the natural origins were legitimate. He had the US intelligence agencies looking into the origin.

https://www.cnn.com/2021/07/16/politics/biden-intel-review-covid-origins/index.html

Low confidence could just mean there is not much evidence available because the PRC has gone to great lengths to control information regarding the origin.