Camille ult should give true vision?

I personally don't care whether it gives true vision or not, but i was wondering how come it doesn't. my brother was playing her and it kinda was a fair point that when she ults a target. the lines and effects of the ult follow where the champion is.

see i think it would give her true vision because that target is already locked down anyway, and say its a twitch shaco kha she wouldn't be able to use her ult at all seeing the damage is only auto attacks, and well that's pretty lame, maybe its alright seeing in a team fight there is bound to be allies with AOE spells but during laning phase or her catching opponents out it would be very lackluster to have them just go away for a duration of your ult and actually when they turn invis the lines point one direction but does not actually follow where they are anymore which can be misleading.