Much of the social history of the Western world over the past three decades has involved replacing what worked with what sounded good. In area after area - crime, education, housing, race relations - the situation has gotten worse after the bright new theories were put into operation. The amazing thing is that this history of failure and disaster has neither discouraged the social engineers nor discredited them.
Without having a date on the quote, it's hard to know exactly which three decades he's referring to, but we certainly seem to be in a better position regarding crime, housing and race relations than three decades ago. Education, probably not so much. This sounds to me like just a meta-contrarian longing for a return to the imagined "good old days".
Here's the new thread for posting quotes, with the usual rules: