>>14250767Particles are not real things either, they are just energy vibrations without physical dimensions or even exact locations.
What is the stress-energy tensor acting on and what curves in response to that stress?
Pic related is what happens to Anti-deSitter spacetime when any perturbations are introduced. The waves self-amplify until there's too much energy in one place for the spacetime to hold it and it collapses/rips. What exactly collapses if there is no spacetime?