I didn't bring up the subject of reference frames. That was you. If you are saying that you no longer what to discuss the subject--which also includes objects that are accelerated by other forces than gravity--fine. As for Luther, I am not intetested in condemning him. This isn't an Inquisition. It is a discussion and disputation of ideas.
No, that is fine, -- I honestly don't remember how non-constant acceleration is treated in relativity, but I can look into it later.
For now, do you or do you not dispute that the nature can be viewed and its laws understood, albeit with a different amount of effort, form any reference frame, even a variably accelerated one?