I Have explained this several times
A script is fixed, top 5 or 7 chosen, then editing of the footage takes place to get that narrative.
So if its not going as per plan, they give cues and if you don't follow that, discard them
Suppose they have fixed a person as a potential winner or finalist, they will make sure all the negative things done or said will be cut out and edited and even their smallest thing will be highlighted , through promos, pre-caps, slow motions etc
If they want to discard someone, either highlight the negative they did or cut out their footage completely where they are not visible at all or to the minimum or cut out their positive stuff.
This is how they play with the content .
So yes there's a script, there's also Plan B, then they execute it through manipulation of the footage through selective editing