bill mobley-
I think your generalizing too much, I've heard plenty of Black singers who do not to all these vocal gymnastics, and sound beautiful, the woman to my left for instance.
Now if you mean pop singers, yeah a lot of singers now a days in general do that, probably an influence from motown and jazz. It depends on the singer and, more importantly, the song. Somewhere is a simple song. It doesn't need all that riffing. It's beautiful. I don't mind reinterpretations of songs.
Audra's Man That Got Away and Judy's are very different, but Audra payed a tribute to Judy, she didn't try to top her. That's part of why they are both wonderful.
Aretha's performance was a "lets see how good I can sound" rather than "let's sing this song in tribute and in truth with all my heart and soul."
Then again, I like singers who act...not just stand there and relying on their voice to carry the whole performance.
"This ocean runs more dark and deep than you may think you know...I'll be the fear of the fire at sea."
-Marie Christine