...did not care!

That is a lie. The Sins cared about their performance. They cared about their hardcore following.  What they did not give a shit about?  Writing a song to fit into a single genre.  If you wanted a CD with 12 songs exactly alike with a ballad in the middle? The Sins were not your band. Maybe that isn't the recipe for commercial success. So be it, The Sins did not care. If you saw a show you know what they cared about.