I think that's very valid. If you are a musician then worship through is likely to be important to you, and you are more likely to be in a church with a strong musical element in the service. And therefore have the opportunity to join in leading. Thinking about our church, we have lost members from all our bands due to moving away, age, death etc., but they have been replaced, through members of the youth band who have stayed local after university, new members joining the church and bringing their talents, or in one regrettable case the sound engineer taking up bass guitar.