Karl Marx celebrated liberalism’s achievements, such as freedom of the press, while excoriating its fidelity to private property rights. We can hold the same tension in our minds — fiercely opposing capitalism while fighting to make liberal rights real through socialist transformation.
I think those sentences are coherent. It says Marx supported liberal rights like freedom of the press, but opposed private property rights. A socialist transformation can guarantee the good liberal rights while abolishing the bad one (private property)