As a gay man I can relate to straight fictional relationships and be perplexed by gay fictional relationships. It does make the Star Wars universe feel more complex and realistic even in it’s fantastic sense. Gay people, unlike darker skinned people are defined by what the do rather than how they look. It’s easier to put more variety of skin tone in front of the camera than sexual/romantic preference. For all we know there may be more gay people in Star Wars than straight. It’s just the straight characters talk on screen about it.