Sixties Blue-Eyed Soul

Could somebody explain to me how the 60s morphed into the 70s? If pot mellows you out and coke speeds you up, shouldn’t the music of the 70s have been louder and rougher than what came before? Did Gerald Ford numb everyone to death? Please help me understand how Mitch Ryder turned into Robert Palmer! Please!

Blue-Eyed Soul AllMusic page