The loom is not anchored at the headlamp bowl entry point; and so given the geometry of the steering, the angle the loom enters the 'bowl & its general stiffness of it you're bound to see it moving in & out a little. I guess on my 750 K2 it moves in & out an inch or so, whilst also flexing up & down a little at the headstock.
If you're not happy with the loom moving in & out you could perhaps route it with a more vertical approach to the headlamp bowl; ie more along the lines of typical car door loom transitions across the hinge. The pull-push would now be converted into a bending / twisting of the loom at the 90 deg upturn .... probably not as good as Honda originally planned it.