No it doesn't because if it has the same pixel density as the iPhone 3GS so we KNOW that the physical size of ANY UI target will be large enough to meet Apple specs. Yes, it will be physically smaller than on the iPad but it will be large enough to meet the iOS UI spec.
Don't argue about stuff you don't understand please. This is called FUD. Every app properly designed for the iPad will work perfectly fine for the iPad Mini INCLUDING being large enough to interact with.
ONLY if someone violated the 44 point HIG recommendation might something be too small on the iPad Mini that could have snaked by on the iPad.