It’s a commune on a very small scale. A commune is communism. Not political communism, but true communism as I understand it.
I will concede this could be more of a Southern cultural concept. Now even with my parents passed on, among my siblings I defer to my oldest brother and my brother that Mom left in-charge of her estate.
Furthermore, in our extended family I will defer to my oldest Uncle to advise and lead. Even if I feel my Uncles advice is not welcome, I would never tell him because he has earned his authority. Among my own family, my wife an I are the parents. If it is family, it can't be a commune.