After the anthropogenic climate change , now we create the anthropgenic plate motion. It Is certainly easier because in the first attempt we have to control extraterrerestrial/ solar and geogene/ geomagnetic field of the mantle-core transition . In the second attempt we can fully concetrate our full capacity on the geogenic ones lithosphere, asthenosphere...
Extensive mining, drilling for oil, and moving vast amounts of earth materials or melting continental ice sheets(due to increasing anthropogenic activities) might stress the isostatic balance. Still, the effect would be negligible because of the sheer size of the plates.