Where did you find that statement? there is no un-Dollmaking.
There's a paragraph on this page if you scroll up right under the 'And Have Fun' image.
Ah, that isn't exactly true. But everything permanent (Except losing Kaldea Razorwing) is done by the player's informed choice.
Then that paragraph should be changed, since it also says "All corruption, lewd statuses, and cursed equipment can be removed given time and effort."
But every exception to that would be a spoiler to mention.
I'm not saying every exception should be listed. I'm saying the statements just shouldn't be there.