Perhaps they were hinting at the band Asia who's popularity was pretty high in the 1980s.
"Punk rock should mean freedom, playing whatever you want,
As sloppy as you want as long as it's good and it has passion" Kurt Cobain
Those "rectangles" are just rocksmiths way of showing tab. I think you'd be able to do the same thing for Rock Band Pro songs
Witt Witt Witt
Read Dead is a bad video game
that's fine for RB where the goal is just having fun and posting scores but RS is actually focused more on learning to actually play guitar, and the only thing most people would learn from playing a dragonforce song on RS is how to give up in frustration.