When two galaxies, under the right conditions, can attract one another, then we have all the evidence we need to know that there is a collective reality to gravity that plays out internally in each galaxy as well.

Even a minor student of physics will already see that, Rex.

We see that a larger galaxy can actually tear another smaller galaxy apart, one mass at a time, so to speak, so we know that the internal gravitational field of the smaller galaxy is not strong enough to withstand the gravitational collective of the larger galaxy; it breaks apart, so we know there is definitively weakness in play. Yet we witnessed a collective behavior in the gravitational field nevertheless with both galaxies getting near each other, attracting one another collectively.

As such, Model B will be far stronger than the not-present option you are suggesting (and then desiring an invisible mass in the center instead). Yet the collective outcome will be found in the center spot of the galaxy, and nothing else indicating it is there.

This is a collective-based outcome: Net-zero gravity in the center, and maximized gravity (strongest of all gravitational spots in the galaxy) immediately next to that net-zero spot.

You are already agreeing to Model B in various other settings.

The opportunity is to write an article together, but it must focus on the exact reason why you would reject Model B for the collective reality of gravity in a galaxy.

That is why I am interested in you, Rex.

First off, you are smart.

Then, you are somehow not giving up communicating (I have no idea why not).

But most importantly is that if you can formulate why you are holding on to Model A with all your might, must reject Model B with all your might, then we have the right angle to address this issue for other physicists.

That is what I am trying to figure out with you; where is that threshold and why is it in place with this amount of force.

A minor student in physics would see what I am talking about and investigate. You have only undermined the option; you did not investigate it.