Flapdoodle.
Local spacetime is bound by gravity. There is enough mass in your average galaxy to create a gravity well that prevents expansion. Molecules are even more absurd.
Flamboyant, ridiculous supposition on your part. Shame on you.
You have no evidence, no proof, not even a *hint* that Gravity prevents the fabric of space, dimensions themselves, from expanding in local areas...yet you spout such rubbish as if it was fact. It's not.
Nor can you even show a Force that *is* causing Space to expand.
Shame. Shame. Shame on you.