My understanding is that support is basically playing an RTS (point and click), not a 1P driving game. Which makes sense, if they were directly controlling the vehicles they'd put support in central America for better latency, like the food delivery bot drivers

Yeah. Waymo described how this works a couple of years ago:

https://waymo.com/blog/2024/05/fleet-response/

Right, I totally believe Waymo, just like I totally believed Amazon's checkout-less stores.