I agree with everything except the last statement
In general I agree with you to a points 1-5 about QM. However QM is not clear about the structure of spacetime other than Space and time are continuous. QM research has considered the possibility that space or even time are discrete but such theories are inevitably inconsistent.
In fact there are two alternate ways to deal with spacetime in QM which contrast to position space you are familiar with in classic physics.
a) Momentum space (
https://en.wikipedia.org/wiki/Position_and_momentum_space)
b) Phase space (
https://en.wikipedia.org/wiki/Phase_space_formulation)
So sometimes for ease of analysis spacetime is turned into something classically we would not recognize but the treatments are valid under QM.
People view this many different ways from a simply mathematical thing to it is implying something physical and I leave that as an exercise for you if interested and I am happy to answer questions.
Statement 6 directly link space and time in GR correctly.
So I can't in good faith say I agree with the last statement (which should be 7) because whether the two concepts smoothly join is not clear at least to me.
However this is not about me, if you are happy that all connects I won't strenuously object and lets see where you go next.
