On the one side, we have a group of people who have poured untold hours and cash into a project that provides almost no benefit to themselves, on the other side

On the one side, we have a group of people who have poured untold hours and cash into a project that provides almost no benefit to themselves, on the other side we have a group of people that stumble across said project and say "wah you should do things the way I want." Which side seems childish?