His analysis regarding Hitler and fascist germany is peak stupidity, way more absurd then all those guys from the Frankfurter Schule. Psychoanalysis is not scientific. While it was kind of revolutionary at a certain point, today it is nothing more then quackery.
The only one who was more "special" is Wilhelm Reich. Before he started to believe in esoteric stuff, he had very interesting ideas and observations regarding fascism and Hitler. To summarize it a bit: Reactionaries are against sex. They want to make it strict. How you have sex and with whom. Also the kind of relationship you have. Communism is different, there is good sex, peak sexual freedom. This was the centre of his entire thinking.
Similar things go for all those other dudes. They all had their special fetish. If it wasn't centred somehow around sex, then it went esoteric or into full pessimism and they became reactionary. Nothing marxistic about them.
Jürgen Habermas is still alive btw.