The other forces are doing stuff to space time, yes, but what? Hell the strong nuclear force is governed by the uncertainty principle...
gravity defines space-time in an immutable fashion because it has infinite range
just the same all other forces can be thought of as defining space-time, but with a limited range in space-time. We use other words to describe their
force-ness, but we are essentially describing how they define immediate/adjacent space-time
And does time even factor into that? It's not like I need to explain that spooky action to you.. Quantum entanglement, effects occurring before cause..
time does because defining space-time defines how space relates to matter translating through space and that will always relate to time.
Spooky action at a distance (SAD) remains spooky because it presents faster than light transmission of information and we have no causal or locality based particle to explain it. Einstein chose the perfect word for it, spooky. It becomes the place where our concepts of linearity of time breaks down. I can fudge around in my head and conceive the weirdness of relativity, I even think I disprove it to myself at times, but SAD remains the stuff of pure magic, beautiful reproducible magic. So that is
Terra Incognita to the imagination or even delusions of understanding.