It would be appropriate to call it by it's modifier, a remote-controlled robot.
Even if you disagree that this is the "common" understanding, the sarcastic exaggeration is meaningless.
I agree with another commenter, that a more reasonable criticism would be that it should be called a "remote controlled robot", rather than just a robot.
According to Merriam-Webster, a "robot" is: > 1. a machine that resembles a living creature in being capable of moving independently (as by walking or rolling on wheels) and performing complex actions (such as grasping and moving objects) > 2A. a device that automatically performs complicated, often repetitive tasks (as in an industrial assembly line) > 2B. a mechanism guided by automatic controls > 3. a person who resembles a machine in seeming to function automatically or in lacking normal feelings or emotions
https://www.merriam-webster.com/dictionary/robot
Maybe a remote control device could fit the definition of 2B, but it's a stretch, as that's so broad that an alarm clock could be a "robot".