I interpreted this to mean the launch lineup merely doesn't have any games that use this. Nintendo knows what third parties have planned so they probably have some idea if third parties plan to use this or not. I never thought of the Wii U not even supporting it out-of-the-box. I just assumed Nintendo implemented it too late to have the launch lineup use it. They might not even have dev kits to support it out to third parties yet and thus they know no third party game will have it. It doesn't mean the system doesn't have it at all.
I remain pretty surprised that Nintendo never thought of this until last E3 when everyone suggested it. I wonder if Nintendo thought of it, figured it wasn't feasible and didn't plan to do it, and then changed their mind when it got brought up. As a programmer I've had times where we thought of something but felt that it was time consuming to include and was unnecessary, only to have our clients immediately suggest it the first time we reveal the product to them. Sometimes you take the risk that no one will care about something and it blows up in your face when they immediately notice it. Nintendo might have felt we wouldn't care about only having one Gamepad and then, oooops, looks like we did.