The Bezmenov stuff is strengthened by the fact that what's going on today looks like it's part-way between Destabilization and Crisis, as Bezmenov outlined the phases of subversion.
However, the thing that goes against perhaps taking him too seriously is that after all the Soviet Union collapsed, so whatever plans they had in motion must have largely stopped in 1989. That's not to say Russia doesn't indulge in some kind of subversion of its own (RT, etc.), but the crucial point is that it's unlikely to be subversion in the direction of Marxism-Leninism.
Actually, if anything, it's likely that Islam has taken up the cudgel. Enough of them have certainly had some Soviet training, particularly the founders (Muslim Brotherhood, etc.). It's quite likely that they're simply carrying on the program where the USSR left it off, this time gunning for Islamic supremacy. (And again, the way in which "liberals" and the fake news media have fallen in line has been just what you'd expect from useful idiots - anyone who uses the "Islamophobia" buzzword seriously is automatically suspect.)
It's quite likely that Bezmenov was just a clever guy cashing in on the suspicions of the John Birch crowd and others. He no doubt had some experience whereof he spoke, but perhaps he elaborated and embroidered and made more tidy, what were in fact rather more loosely and haphazardly-organized attempts to do what he outlined - but what he's talking about you could piece together in a less conspiratorial way (i.e. in more of a memetic-epidemiological way).
Far Left ideas are certainly corrosive of a culture, that's for sure. And that might not be such a bad thing if we could be assured that what comes after is sunshine and roses, but we've got an accumulation of good reason to doubt the siren song of socialism going forward.
