How did the disco scene of the 1970s reflect the political and social apathy of the era?

One just needs to tune in to the verses of most 70s Disco music to acknowledge they just sang about "looking great and having a decent time moving on Saturday night." Very couple of artists/lyricists were equipped for remarking on anything that was a social or political issue. Socially and politically detached - point of fact! At the time, cocaine was the medication of decision. 
The individuals who had a still, small voice could just stomach so much - thus when Punk music started in 1976 - 1977, it was the response to the lack of concern, getting individuals required in testing the staus quo and thinking independently! One just needs to tune in to the verses of gatherings like the Sex Pistols or the Clash to comprehend that the youngsters all through the western world needed to be heard once more!