Getting a chance for the player to see through a different lens was a central goal of this game. I can understand the frustration, as I bet it is similar to the discordance I can get reading romantic works. But I hope this game helps build empathy for different viewpoints.
If you are referring to why Sakuya and Kogasa are featured as suitors, I selected each of them based on the angle they could add to the story. Kogasa is a lovable goof who is easy to read for a first challenge, and Sakuya's form of expressing love through gifts and service could be played off Reimu's greed.
Thank you for playing.