This may be where you are having the problem. You think that there are fewer assumptions in a rotating earth model than in a rotating universe model. There are not and Occam's Razor does not apply.
You assume that the moon rotates because you assume that the universe does not. I observe that the universe rotates and observe that the moon does not.
There are fewer assumptions in a rotating universe model and Occam's Razor cannot be used as an argument in favor of a rotating earth.
You apparently have a comprehension problem. Reread the thread until you understand. Optional: read a few books on General Relativity.