We accept that forces behave differently over different distances. No one is arguing that. What we are pointing out that this is in no way evidence for anything other than the force being associated with a potential. You seem to be trying to spin this into some incredibly significant aspect of the way the universe works.
Plus at tiny scales gravity can become important. It depends on the mass in that tiny area. That is the whole problem we hit trying to push the big bang cosmology backwards in time - at some point gravity has to be taken into account at the smallest scales. And we don't know how to do that. So your second point about gravity is patently false if you consider the history of the cosmos and not just what you can look at now.