While there is no doubt that the world is overrun with potentially beautiful songs covered up with orchestral sludge, I try not to think of it not so much as over-production as hearing with different ears. Much of it is not to my taste, but being a fan of "fringe" music, I dont expect it to be. Yes, I still prefer any Carnegie Hall Concert version of the Weavers doing ROCK ISLAND LINE or GOODNIGHT IRENE to the Decca versions, but the Decca versions still made it possible for The Weavers, Pete Seeger, Lead Belly, et al, to enter the popular consciousness of the 50's, which made it possible for Bob Dylan, PPM, Joni Mitchell, Bruce Springsteen, John Sebastian, Jimmy Buffett, Christine Lavin, Joan Baez, Bill LaBounty, Vance Gilbert, Holly Near, and probably a few others to emerge later.
There is certainly a world of difference between Arthur Conley's SWEET SOUL MUSIC and the version by the Burns Brothers, but it's still just a matter of hearing with different ears.
How many people, after hearing Bob Dylan doing SONG FOR WOODY and TALKIN' NEW YORK, heard his version of CORRINA CORRINA and thought it was over-produced?