I think you're right. He knows that he's been wrong about Putin but is choosing to dig in rather than admit it.
Whatever else NATO has done, they didn't write Dugin's wretched hate screed.
FWIW, Dugin is a pan-Eurasianist whereas Putin wants to rebuild the Russian empire. Dugin actually has very little influence over Putin, and Russian nationalists generally hate him for his view of ethnic Russians as being merely one equal partner among the various groups that would compose his idealized pan-Eurasian continental empire.
