I've been meaning to write about my beefs with the seven principles, but Peacebang expressed it perfectly:
I think they've been a help to us in the past ten years, and have become a hindrance in the past five or six. Why? Because too many overly-earnest UUs have adopted them as a quasi-creed, and because we generally grossly misinterpret the first principle and use it in a disturbingly, narcissistic "Don't Tell Me I Can't Say/Do That Cuz I Got Inherent Worth And Dignity" way that violates its original intent.
So now I don't have to.