I've been reading (and rereading) the intro to Sublime Object of Ideology by Zizek and he says at some point something like "I will try to rehabilitate psychoanalysis by using Hegel. This seems pointless, because psychoanalysis as philosophy and practice is discredited and Hegel is even more discredited by progress of science".

Now I know about troubles with psychoanalysis and Freud, but I thought Hegel is well respected and inspired Marx who is also influencial. Or did Zizek succeed in his rehabilitation since Sublime Object was written in the 1989 and the way we view Hegel today has changed since then?

EDIT. Found the exact quote, he refers to dialectics specifically as being discredited:

"...rehabilitating psychoanalysis in its philosophical core - as a theory indebted to Hegel's dialectics and readable only against this background. This cannot but appear, perhaps, as the worst possible move to have made: trying to save psychoanalysis, a discredited theory (and practice), by reference to an even more discredited theory, the worst kind of speculative philosophy rendered irrelevant by the progress of modern science."

Page 7: https://altexploit.files.wordpress.com/2017/09/slavoj-zizek-the-sublime-object-of-ideology-second-edition-the-essential-zizek-2009.pdf