Rather than learning to fight, work on your brain. Digimon have power enough, you'll be more useful as a commander to tell them how to use it properly.

As for the 'false partner' part, you're accepting as fact words we got from an enemy who was then trying to kill everyone, and confirmed by the fox-hooker. It was probably an attempt to make us stop working with our partners so it would have an easier time wrecking the place.