When the yeshivas were established in Europe, there was a shift of emphasis from choosing a chazzan with a kol na’eh to selecting a tzaddik to lead the davening — regardless of his voice or ability to carry a tune.
Today there is an emphasis in yeshiva communities to replicate what was done in the yeshivas.
I heard in the name of a Bnei Brak Rosh yeshiva that the singing should assist our davening, and not the other way around.
Personally, I love davening at my Yekkie shul where nusach is paramount, very consistent and inspiring.