I’d imagine most of the players here have been told that at some time or another, and have probably heard it many times. There is some truth to it in the sense that it’s possible for fast players to lack emotion, but it’s just as possible for other players to lack emotion too. Maybe a few fast players who lack emotion or feeling in their solos have given fast playing a bad name. You can all probably think of some very fast players who do lack emotion or feel in their playing.
I don’t think the detractors of fast playing have necessarily even heard the different styles of fast, electric guitar playing and the emotions those styles are capable of conveying. I recently mentioned the guitar solo in “Neatz brigade” by The Obsessed in a very different subject - I was asking people if they thought the fast parts of the solo were mostly picked or mostly a combination of hammer-ons and pull-offs. If you didn’t happen to seethe, or maybe are’t even interested in whether most of it is picked or not, listen to what a different type of emotion Scott Weinrich a.ka, “Wino” is capable of conveying through fast playing compared to the emotions a layer like Paul Gilbert conveys through his playing. I’ve never heard anybody say Wino’s playing has no emotion. Guitar Magazine described his playing as the sound of a man slowly getting angry. Wino has a unique style and it’s a style I wasn’t familiar with when I began learning how to play guitar back in 1984. I didn’t even meet Wino until New Year’s Eve 1998! As good as his playing is on his albums, he’s an even better player in a live performance in a nightclub or other venue. As I watched him perform it seemed that his guitar was simply an extension of his body; there seemed to be no separation between the guitar and the rest of him! His solos live tend to be even more intense than on record.
Here’s another song with a great solo by Wino: