Actually if there was something working the way you say RR does it's not clear to me at all why something moving away from the "source" would not also be affected, just to a lesser extent, thus that spiral galaxy would quickly (in a few revolutions) be reduce to a blob.
Bjarne used to explain this problem with a mysterious stellar wind that exactly counteracted the resistance against motion so that it was impossible to tell if the resistance exists!
Perhaps this idea was too much crackpot even for Bjarne, and now he tries with another crackpot idea that kinetic energy which is usually lost with resistance, can somehow be gained and counteract the resistance.
Yes there is resistance towards the RR direction and “following wind” the opposite way.
Because deceleration is turned into acceleration (due to closer approach e.g. to the Earth / Sun ) is why little (or none) kinetic energy is “lost”, -(converted to magnetism) in the Solar system.
In galaxies this is different..
Space-wind is something different.
I am sure that, - the rotation of orbiting objects transmit KE to objects orbiting around them.
But only when the angular rotation speed, - is faster as the (angular) orbit speed of the orbiting objects.
When the angular speed of the orbiting object is faster as angular rotation speed, of the central object, (e.g.; the Sun) the opposite happens.
In such case the orbiting objects are responsible for the rotation speed of the central object.
For example, the Sun transmits KE to the planets, but the Planets not to the Sun, - the result is decreasing Sun rotation. (There is plenty of evidence for such pattern “out there”).
Opposite for example fast moons (e.g. Jupiter’s fastest moon, pulls Jupiter’s rotation) .
This mean planets, and moons are lost one by one.
The Earth has also lost a (small) moon once; - this is why the Earth is rotating.
Properly the lost of a Moon is what killed the dinosaurs, and also 90% of life on Earth.
It is impossible to prove in a lifetime; therefore I do not pay it much attention.
http://www.science27.com/english/the_space_wind.html