What if Zenitsu learn all forms?

What if Zenitsu learn all forms? If he gave him all 6form zenitsu would be called as hashira level person just by knowing this form is actually powerful. So he gave him 1 form and we actually see Zenitsu going for everyone and how strong and fast is first form.

If he gave him all 6form zenitsu would be called as hashira level person just by knowing this form is actually powerful. So he gave him 1 form and we actually see Zenitsu going for everyone and how strong and fast is first form.