What are you confused about? It's actually very simple.
If galaxies were able to recede from each other at or over the speed of light then all the paradoxes that arise from that would still apply. Time dilation, length contraction and the mass of the other object would all become infinite at the speed of light because they all measure the same speed of light relative to themselves despite their velocities relative to each other.
According to the model the distance between the galaxies is not increasing at a constant rate, the distance between the galaxies is increasing at an ever increasing rate.
This is not what's observed though. If galaxies were moving away from us faster the greater the distance between us and them then that's just another way of saying that the rate of the supposed expansion is increasing over time but if that were true then we'd have to see galaxies moving away from us slower the further we look back in time.
Yes they'd actually be moving away from us faster the further away they are but we're seeing them as they were, not as they are now. The further away in space we look, the further back in time we see.
In an expanding universe in which the rate of the expansion is increasing over time we'd be seeing the closer galaxies moving away from us faster than the more distant galaxies because we'd be seeing the closer galaxies at a time closer to the current rate of expansion and further galaxies at a time when the expansion rate was slower.
This might help explain where I think you are wrong http://curious.astro...ht-intermediate Is there any point in this link you disagree with.
The outer edge of the universe is receding away from us at approaching the speed of light. Observed galaxies are eventually red shifted out of view due to the rate of expansion and the fact they are moving away above c. This in no violates SR or GR. The space between us and the outer galaxies is expanding, at approx 70km/s for every parsec away they are. This means the distance from us to galaxies on the outer edge of the visible universe is increasing faster than the distance between us and galaxies that are closer to us. Yes the light arriving from the outer universe left those galaxies a few billion years ago, and light they transmit today will probably never reach this planet, as those galaxies will be receding at above c, and will be red shifted out of existence.