Except for the newspapers everything is available elsewhere on the ship. There is a main concierge available to all on either deck 4, 5 or 6 depending on the ship. Although newspapers other than the daily thing they give you with Currents are not available, the internet is. Pretty much any news you want, except those behind a paywall. Tourist books are generally available in the library, but then again, there's the internet.
For me it's much like the Spa Terrace, the times I've had access to them I really didn't use it, so I certainly wouldn't put any value in it when deciding whether to pay extra for the Concierge or higher level. Obviously your experience is different. To each their own.