I did listen to him, and Steve Vai for a while. Kind of went through a phase back in the Surfing w/ alien days. In the ned. it all souded very sterile (for lack of a better term). They are very skilled, but it all lacked the character and emotion I find in the music of others. I think that is why they aren't more popular. Sure, any guitar player would want their skills, but I'm not sure they want to sound like them. Awesome, yet bland if that's possible.
Clapton did some electric blues stuff a few years ago, that was awesome. SRV, great stuff. These are the guys off the top of my head, there are others. What makes them great is they really pull the emotion from their gut, and translate it into music. It's more than just playing super fast with perfect skill.
Could I play that way, heck no. Do I have a right to criticize, as a cunsumer, I sure do.