I'm giving a screenshot for those who didn't click the link or didn't open pdf (logical or).
If you look carefully, you may recognize Special Relativity's Doppler effect equation, that is the same for both GR and SR, because of the equivalence of the GR and SR time dilation given by this equation. You may even realise, that this equation has a velocity, that must also be identical in GR and SR, if their time dilations are identical. You may even notice the dependence between this velocity and the redshift z+1. A ton of sarcasm is dedicated just for one person, who probably forgot to paste a table to support Friedmann's equation with the values. Your beloved Davis and Lineweaver is self cotradictory, they couldn't even plot the Doppler function properly on the Velocity vs Redshift graph. There are basically wrong values on the velocity axis, that are completely unfit for the Doppler (Special Relativity line). I totally realise that there is a logarithmic scale on the redshift axis, but that doesn't change a thing regarding its invalidity.
Mr. moderator, so far you have shown extraordinary decency by allowing me to defend my point of view instead of banning me and giving the last flood of words and equations to you know who. I count on you to maintain this decency.