In recent years, there is a marked shift in the ideal of pop-punk. What was once a, pretty justifiably, derided sub-genre, now has an odd cult-like following surrounding it. Swing over to Tumblr and see a devotion that seems so alien for a musical classification who shining stars are Blink 182, Sum 41 and Green Day. Fun bands in their own right but they’re not the kind who’d inspire Rush levels of dedication. Within that too there is an idea that this category is under some kind of threat that it needs to be “defended”. But what’s so odd is…