Doc,
I couldn't agree with you more.
I have been having this argument with my wife since American Idol (aka - Pop Idol in the UK, I think) first aired.
All of these, as you so rightly put it, "whohoowho" singers are really not contributing anything to the world of music, or its history. They may have good voices (if they ever held a note), but they are absolutely "cookie-cutter" sounds that do not inspire any emotion or response, other than nausea and, possibly, dry heaves.
It is as if they are just an excuse to lay down a snappy backbeat that the kids can dance to. My daughter is one of those kids. She can't tell you the words to most of the songs she listens to, but as soon as she hears the "wickey-wickey-boom" she starts gyrating.
Even a voice as suspect as Bob Dylan is preferable to me. At least he had character, emotion, and his own sound. The current trend in pop music disturbs me. I guess that's why I stick to folks like Guy Davis, Bob Dylan, and Neil Young (another distinctive, emotional voice that would probably have never won American Idol).
Bravo, Doc. Great thread, and astute observation (as usual!) 