I think that a true musician seeks to acquire the technique necessary to achieve his/her personal music vision - be it Django or Michael Coleman or Bob Dylan. In the case of Bob Dylan, instrumental virtuosity was not needed to attain his music goals. And, of course, in our current day-and-age, musical knowledge is disseminated so easily ( think Youtube) that the acquisition of great technical expertise on an instrument is that much easier than even a few short years ago ( it still, of course, takes a great deal of dedication - and not a little natural talent!)