Complex sentence: They named the band the Riverdales, after the fictional town in the "Archie" comics decided to perform under their birth names, as oppose to the theme of using pseudonyms in Screeching Weasel.
Split into simpler sentences: They named the band the Riverdales, after the fictional town in the "Archie" comics. The members of the Riverdales decided to credit themselves under their birth names, as oppose to the theme of using pseudonyms in Screeching Weasel.