This is a joke right? Having to prove you like something, amazing.
Are you ok?
I didn't ask him to prove that he likes something. In fact I absolutely don't give a damn of what he likes.
I asked him to prove that he can "maneuver easily and quickly".
Which he can't, unless his definition of "maneuvering" translates in strolling around with the entire party in auto-following without attempting a single advance action.