When culture changes, music changes, and not always for the better. The pattern nowadays in pop music is the slide, and it is not good music. Again, vibrato has mostly gone by the wayside. Also, the lyrics are frequently filthy, especially in rap. Go ahead and defend it if you wish, but you'll never convince me. As a culture degenerates, so does their music, because music is part of culture.
Example: Buddhism does not have hymns or praise songs. Why? It is a degenerate religion, in which a person is encouraged to be completely inward focused, aiming for "enlightenment," which is a very selfish goal.
Oh, and by the way, classical musicians and their orchestra always dress very nicely, usually suits for the men--one more part of culture that believes in dressing respectfully.