This is a hoary old chestnut. Why, when I were a lad the current crop (then) of pop idols were castigated for their annunciation. I remember not being allowed the arguemnt that Joan Sutherland singing "Land of Hope & Glory" qualified as a comparison, she was a bad example & I should chose an opera singer with less vibrato, tremelo or contralto obscura. Hmmmm. We listened to old Zimmerframe so many times that we had the sounds imprinted on the inside of our collective crania. As for the meanings it is de riguer that adolescants should differentiate themselves from their parents and mumbled jumble is part of the armoury. Anyway I think I agree, today they are far more hyped, visually groomed and come with a sell by date. Instructions not included.
& a talent to refuse?