I dont understand why the devs of karryn wont, instead of debbugging the current version and later releasing a trainee version of the dlc, will cancel the dlc and rework it into something else, i dont see why both version cannot co-exist.
First of all u can already have the current version with beta.
Now about ur question there are many reasons, example of few:
1. Majority of ppl disliked it and ppl wont pay for something they dislike (this is a paid DLC so ppl are more sensitive).
2. If he release a disliked content and plan to update it later, its bad marketing.
3. Early sale of a product is its biggest sale time if u ruin it, u wont sell much even when u fix it.
4. U cannot make same content which do same thing CO exist, it does require extra energy, coding, bug fixing, support and is a waste of time for producer overall, SPECIALLY when one is superiors to the other.
5. the updated version is not suppose to remove any of the fap materials, if we assume that with update he is going to add corruption system like waitress or office or strip job, then with high slut lvl u can still have same content as right now, so the current build is absolute.
6. alot of other reasons...