Copywrite laws state that you have to use the same 7 "chords" in a row to steal something. Having said that, metal is an old genre, and a good deal of the basic riffs we here these days are really just older stuff getting rehashed. You can hear alot of black sabbath in the guitar lines of main st...
All I read from that was "Look at me! I'm a douche bag with "must have the last word" syndrome! Plus I love to shove my opinions upon anyone I see on the internet to assauge my sense of self importance!"
It's nice to be reminded that metallica didn't suck back in the day.