Sure: I didn't say that the remote workers were driving the autonomous vehicles. The NYT article I linked gives a pretty clear account of what they're doing. (The big exception here would of course be Tesla, assuming it ever gets its current "robotaxi" plans to fruition.) In any case, while the "what the humans are doing is not driving" thing always seems to come up early in these discussions, it's a relatively secondary issue when it comes to the cost and profitability question, while (as you say yourself) things like human-assistant-hours per vehicle-hour are central.