Its neither mainstream or marginal, it's sort of subcanonical. I remember reading about how the revision of the literary canon from the 1970s on by feminist and postcolonial authors, which was intended to do away with the idea of canons, actually did something very different: it strengthened the existing canon, and sanctioned an anti-canon. What
What that means in practice is that academics read Shakespeare now more than ever before, and they also read Aphra Behn (important Restoration poet and playwright, possibly a Dutch double-agent, who wrote clever, commercial dirty things), but nobody reads Marlowe (one of Shakespeare's primary influences) anymore.
I think Russian intellectuals stand in a similar relation to the mainstream of Western European/North American cultural thought—not quite as bookmarked as German intellectuals, but more known than Cossacks in Khabarovsk. Also, aren't bookflap photos of intellectuals always a little strange? Like there should be any correlation between how one looks and how one thinks?