Multi-generational families are becoming more common again, but these ( in the past ) were cases of the younger family members staying "at home" until marriage ( which was entered into at a later age. )_
Today, it's often the case of "moving back in" because of not being adult enough to handle life on their own.
He really doesn't like it as much as he thought, though, so he quit his job and is coming back to Fort Worth. The theory is that he will get another job here and move out ASAP.
Gee, that's tough not LIKING your job. Some people work for YEARS at jobs they don't LIKE. It's what keeps food in your gut and a roof over your head though.
Social adult norm in the past would be to continue in the job you "dislike" until you can afford to look for a job that you DO like in the community that you wish to move to, land that job, then move back. All on your own.