A quote from one of the elders at the church I serve:
"One has to be able to pursue "technical" excellence without impugning or judging others who do not progress as far in it. That said, there has to be some minimum accepted level of technical expertise... to facilitate the harmonious singing of praises to God. It is this line where people differ. I think both sides can be prideful.... Looking down on others who do not place the same value on technical expertise or looking with pietistic disdain on those who place a greater emphasis on it."