This is a common misconception lalo na sa mga musicians na namayagpag nung 90s. To them, rockers are amateurs and the only way to be a pro musician is to be a jazz fusion enthusiast. Funny is that the guys who believed in this adage are not even well versed in jazz. Yung mga nagsasabi nito mga ALIAS din sa jazz.
It is true that it is the most demanding musical genre aside from classical but it doesn't mean that you are a mature musician if you become an exclusive jazz player. Tell that to Vai, Clapton, May, Satriani, Petrucci, Albert Lee, Brent Mason and they will simply laugh at you.
I don't mind playing "So What", "Giant Steps", "Take Five" and I will have a great time doing it. But nothing knocks my socks off than plugging my guitar to a Marshall or VOX AC-30 cranked to 10 and hit an A5! When that sounds rages the room, I feel like I'm the richest guy on the planet.