As a vulva owner, for me, the big win with the bidet isn’t the butt.
Either way though, the goal is to get clean with water, instead of a dry piece of paper, and then use either toilet paper or a dedicated towel to dry down the now clean area.
Just like with a shower. You don’t clean yourself with the towel. You get clean with water, and then dry with a towel
Another language. It changes the way you see the world