So, they need to find some way to gain attention among the zillion other "journalists". They make up their own systems, make their own opinions, use their own crystal balls (how can anyone know what any individual will do this coming season, let alone how various teams will do?), post them on social media and the web, and then every fan can either feel good or bad about their teams or their favorite players and have something to argue about.
Their opinions are no better than anyone who posts on this board.