String theory specifically fails to predict/explain gravity. Most versions aren't even background-independent, so they just assume spacetime is a thing.

So no.

This seems weird because LQG is at least trying to be background independent. And spacetime isn't just a thing, it's the thing that needs to be explained in quantum terms.

Concentrating on particle-ising (or operator-ising) gravity seems like missing the point to me.

But I'm not remotely a pro, so I could easily be missing something important.