A welcome addition to the current flap of mutual headbashing on whether the idea of "inflation" is actually scientific or not.
Still, I need a refresher on how this "expansion" thing is supposed to work. After all it is not "blowing space" that "pushes" things as gravitationally bound systems do not see expansion. Instead we see divergent trajectories through 4D space if the map 3D space to a surface into said 4D space, was it? The Friedmann–Lemaître–Robertson–Walker universe model tiptoes around that question as it considers matter an infinitely-divisible gas througout of space...