But I think his point is he doesn't need to, because GM doesn't have a FSDb equivalent product on the market yet anyways (note Munro did have seat time in FSDb). By the time GM's system is out, FSDb would be on a different version.
They do have experience obviously with AP and likely have a positive impression of that vs the Super Cruise that is commonly available on GM vehicles. In this case Tesla's strategy of having a unified free included AP is helping them, vs a GM probably having a hodge podge of different ADAS systems depending on which vehicle you buy. I just checked, Bolt EV only has LKA, Bolt EUV has a lower end version of Super Cruise, only the Cadillacs have the full version.