Laughable. Newtonian physics is the most useful view/model for calculating orbits, impact, velocity, etc. This in no way makes users of Newtonian physics deniers of Relativity.
Einstein KNEW the Earth moved. Every Scientist of the last few centuries knows that the earth moves. Only those who reject Science for an egotistical and human-centric view that is not even supported by the Bible think that the Earth is motionless.
Still waiting to see your math work on how any object exerts a strong enough force on the Sun to make it circle the Earth. Should be easy enough if you have Einstein in your corner.
Is GR now Newtonian?
Einstein's first premise in GR is that there is no observable evidence on Earth that proves that it moves. (or had you forgotten that?)