You are quite right. This stuff isn't happening by accident. I think a lot of this stuff was started in the 50s by the KGB, and has taken on a life of its own long after the demise of the USSR.
Much of it was the followers of the Italian Gramsci, aka the "Critical Theorists." Critical Theory means criticize everything in the country you want to undermine and never, ever offer a solution to replace what you're undermining.