I haven’t noticed my sims stopping doing anything they dislike that I have ordered them to do. I don’t tend to make them do things they dislike that often though as it usually makes them unhappy. I actually really like the preferences system, it adds to my sims personalities. I have a mod that assigns them random likes and dislikes as I play without the annoying popup asking me if I want to allow them to like or dislike something. That has improved the whole system for me by a lot. I wish we could get more options like favourite food and drinks.