I mentioned the open office to my former manager as one of my reasons for leaving (yes, I know some people think it's never a good idea to give exit feedback, b

I mentioned the open office to my former manager as one of my reasons for leaving (yes, I know some people think it's never a good idea to give exit feedback, but IMHO it depends on the context). I knew my manager was already not a fan of open offices, so I figured I'd give him a bit of ammunition.