I tried to steelman this kind of post-liberal thinking and summarize what I perceive to be the overall thrust here.Again, it seems to me like you're projecting your own reasoning onto what Dugin is saying.
Religion, state, ethnicity hasn't been doing us much good. The problem is that the vast majority of people have nothing of worth to replace those things with at an individual level, so they flail in the wind and end up being swept up by whatever new identity presents itself.
But this is kind of the point of the critics of liberalism: people have nothing to replace religion, nation etc. with. Where you disagree (it seems) is that there can be something better to replace those things with, whereas the critics of liberalism think this will always end badly.
At the end of the day, I think a lot of this discourse is bloated by word games and abstract definitions, and there are people on both sides who are making good points and those who distort things. There are also cultural differences, where Americans are super attached to liberal ideas and react strongly to any criticism, and others like Russians and Europeans who have more collectivist priors. Sometimes it turns out that both are actually not far from each other once they get over those words and definitions and intellectual traditions if they cut through the abstractionism.
BTW I had some thoughts I wrote down about that here:
Classical Liberalism or Post-Liberalism?
Both are wrong, dialectic is a bitch, and it's the Reformation, stupid
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