Depends on your problem, programming/teach a robotic arm in all dimensions is often faster in a 3D environment or VR, but programming that arm in just 2 dimensi

Depends on your problem, programming/teach a robotic arm in all dimensions is often faster in a 3D environment or VR, but programming that arm in just 2 dimensions is probably faster done in normal code aka 2D. It a bit like the discussion of Gui's vs Terminal even if both of them are 2D.