(Feel free to correct me if I'm wrong or outdated!)
The threshold mechanic has the (intended?) effect of increasingly softlocking you towards the path you pick in your early choices. Like, if you go through a few reluctant choices, you can barely dial things up later on, and viceversa.
I think it works for continuity's sake, I'm totally ok with doing several runs of the game. But maybe I want my darling to really explode out of their shell, or have a sudden bout of shyness? ;3
Could be cool to add a cheat mode to be able to pick the scene variant you wanna read. Maybe a 'New Game+'?