This is one of the biggest issues. If you do not have a smart builder advising you on every step of the process, you will eventually take horrible advise from a salesman and end up screwing yourself.
Nothing wrong with "smart" lighting systems (Lutron). These lighting systems are essential for large homes. Just need to be installed properly.
You can almost hear the salesman saying "you'll save money on the electrican with this $200 light switch!"