"We're in danger of confusing 'over-produced' with 'over-arranged' here. Over-arranged is what it says, over-produced is things like faking quality by using pitch correction, or compress it to hell so we wind the volume up (yes that is also mastering/engineering - part of producing)"

I beg to differ on this. There's no hard and fast rule about what a producer is/does. Typically a producer is the person responsible for the sound of an album. That can mean pretty much anything, depending on the producer in question.

That can include ideas about arrangements. It can even mean song-structure input ("the intro's too long", "lose the middle 8", "don't bore us, get to the chorus!" etc etc), it can mean telling the drummer not to play and getting him to just play tambourine.

Equally, it can be a very hands-on mixing engineer type role. Or it could just be providing a kind of vibe. All manner of things.

Personally, if I were in the producer's chair, arrangements are probably the first thing I'd stick my beak in over if I thought they sucked.