Whilst I dig the politics (aside from the problem they appear to have with straight edge)...
Back to the Motor League '...weiner's drunk on straight edge, fuck off, who cares...'
Claiming Straight Edge does not make ensure a higher class of human being, the ideal of living a life as free from drugs/alcohol/promiscuity as humanly possible has been around for centuries. This is the way I interpret that line. I could be right or wrong, hot or cold etc.
If there are other references please feel free to share them.