It actually is, at least the music part. That's what's great about it. That's what gives it it's power. You don't need a college degree to be able to crank out Satisfaction, like you would Vivaldi's Seasons. You don't need a $12,000 saxophone to be taken seriously, like in Jazz. A cheap guitar and an amp with grit can get you by.
The simplicity of Rock and Roll is what draws the masses. Most people aren't musicians. You nail the intro for Johnny B Goode, and they think you are a guitar god, when it's actually an easy piece to play on guitar. Most people don't understand complex chord progressions, that's why Rock is simple in that way.
I don't intend to demean Rock when I say it's easy. Actually, the opposite. Once you can demystify what it is, and see that it's actually that easy, you can play confidently and put on a show. Check this out:
Led Zeppelin - Rock And Roll (Live Video) - YouTube . Neither Jimmy Page nor JPJ are doing anything that difficult. But is the song still a masterpiece? Most definitely. Did they put on a show? Sure. Did Jimmy Page play sloppy on the solo? Sure. Did the Crowd love it? Of course! It's friggin Zeppelin!
That's what's great about Rock N Roll. It's the style of music that says,"Be a part of it" and "Hey come join us and jam!". You don't need a tux, years of education, and an expensive instrument. You just need 3 chords and some energy.
It really is that simple. Thank God that it is.