Has successful ground to space teleoperation ever been
demonstrated? (See again the excerpt "never been accomplished." Are
you claiming that is false?)

Yes. There were several successful such experiments aboard a Spacelab
mission, which were provided and run by DLR in Oberpfaffenhofen. A robot
hand controlled from the ground, with a variable 4-7 second delay, caught
a moving object. The operator was assisted by predictive graphics to perform
the task.

Jan