Well, I'll admit that the train is, in fact, in communication with a central server that controls the trains. I guess that makes them remote-controlled. I'll even admit that humans monitor the performance of the train system. However, humans only drive the trains in exceptional circumstances. I've seen it happen a few times, and you can watch up close because there is no enclosed space or seat for the driver. They just unlock the cabinet that's in the passenger compartment and tell the control center that they're taking over using their handheld radio. This is what it looks like.
As it happens, I toured the control center with my son's cub pack (younger than scouts). I asked if they employed more or fewer monitors/controllers than a system with human-driven trains. They said they had about the same number. There were less than 10 people in the control center, including supervisors and the tour guide with a few to several dozen trains running at any one time on two lines.
During the last transit strike, the trains kept running with a normal schedule. Driverless. Really, truly. Nobody there. Crickets.
You could say that the entire system is a robot (rather than each individual train), but I don't think these trains are drones under any meaningful definition. They are not driven by people. They are autonomous machines monitored by people, and the monitoring is about as rigorous as for the New York Subway.