“So if spacetime is just a combination of time and space, and the space itself cannot be warped, then that only leaves the time element. That is the thing that is actually being warped to produce the effect we see as gravity. Gravity is an effect of warped time, not warped space.”
This is absolutely false. The three dimensions of length are altered by gravity just as surely as the fourth dimension of time; in special and general relativity, the only difference between length and time is their opposite signs in the distance metric.
“The three dimensions of length are altered by gravity...”
This is just a nonsense statement. Gravity isn’t “altering” anything. Einstein actually proposed that gravity isn’t even a true force at all, but just an emergent phenomenon created by warping of spacetime. It is mass and energy that warps spacetime (never space) to create the appearance of gravity, NOT the other way around.