I think the key is that this isn't a traditional album, and this isn't a traditional single approach. Putting out this song first is much more about reaching out to fans of the band... more than attracting new people to the band.
I've heard a few people say that elements of the song were 'fan service', which is simultaneously a compliment and criticism, I feel... but in reality - this was one of the first tracks we really dug our teeth into while writing the record - and it is also about a pivotal moment in the story - so all of the musical allusions to previous and future songs/motifs arose from a place of genuine purpose.
It was also about putting my foot down about the type of band this is. There are going to be 3 to 3 1/2 minute songs in the band's discography - there are going to be mindlessly poppy songs - there will undoubtedly be choruses that are singable... but the purpose of the band is to be creative and organic, not to hit it big on the radio - and releasing a 9 minute track feels like the right first step to reclaiming that identity.