I think some of you miss the point. No one has claimed that being a virtuoso guarantees that they will produce memorable music. The point is simply that having a larger, more diverse musical arsenal opens up a lot more musical possibilities to the player and can elevate the playing of a tasteful player to a higher level. That is a simple reality.
On the subject of "complexity" in a musician’s playing, or in music in general. Open minded listeners who like a "simpler" style should consider that SOMETIMES it is simply a personal preference for that particular style, or can be a negative reaction to a style that is outside his/her comfort zone as a listener and not necessarily a reflection of the player’s talent; or depth of the music in absolute terms. It is usually a good idea as a listener to keep an open mind toward expanding that comfort zone; just as it is for musicians.