It depends.
Sometimes when people have moved out to attend school, they are still minors, who should obey their parents unless it is an abusive situation.
Sometimes, people who have moved out are no longer minors, but they are dependent on their parents for their support. In those cases, the person who is living off his parent’s money should reasonably respect his parent’s wishes. If he can’t do that then he should either discuss with his parent or stop taking the money.
Once a person has reached legal age and is self-supporting and independent, he no longer has to obey what his parents say and can make his own choices. However, he still has to treat his parents with respect and it would also perhas be prudent to at least consider their advice, since parents usually have their children’s best interest at heart. Even if you end up rejecting their advice, at least give it some thought.