The biases of sects, the racial divisions, these are ingrained existences, and even those powerful beings do not actually harbor malice towards these innate demon gods, but they still prefer the human race.
It's not that no one has considered collaborating with Fate Controller Star Lord, but compared to Divination True Monarch, Fate Controller Star Lord has long been entrenched within the Star Lord Temple and rarely sets foot outside. His own practices are also of a closed and exclusionary manner, which is why few True Immortals communicate with them.
Not only Fate Controller Star Lord, but many other demon gods who returned from ancient times also have similar styles. It's not that they don't acknowledge the human race, but their personalities are inherently solitary.