True, neither the 46 or bus will probably ever “tow” someone back to friendly territory - but the bean counters will add up the cost of an extra crewman in every tanker crew over the life of th3 aircraft against the probable need and decide it’s more cost effective.
Plus, of course, the bus is trialling fully automatic refuelling and, machines being what they are, that most probably be more reliable over time, if only because it’s reaction time is thousands of times faster.