A concept (spacetime) communicating with matter, what a load of horse shit. That's a reification fallacy by the way.
You're a smart man, it's gibberish esoteric pseudoscience. Einstein invented an abstract concept known as spacetime and
reified it by claiming it is interacting with physical matter.
The scientific method requires a naturally observed phenomenon, a hypothesis (a guess what is the cause of that phenomenon), and an experiment to test that hypothesis. Relativity does not have a hypothesis and experiment, so it does not follow the scientific method, and thus can be regarded as pseudoscience.