Especially since the show seems to be using ice skating as a vehicle to indirectly advance themes of love and sexuality through showing rather than telling. Given that, it would be more pandering to highlight Yuri's and Victor's relationship as a token gay couple, in my opinion. YOI is aiming to provide a (relatively) true-to-life representation of the world of figure skating, albeit rife with symbolism and the usual anime theatricality.
I would totally understand if it seemed like they were trying to build a harem around Yuri and turn the show into a BL visual novel, but that doesn't seem to be the intention. Just because three or four characters are queer (or implied to be) doesn't mean they're all attracted to each other by default: they embody the same potential to express a variety of personalities, interests, dislikes, and relationship modalities as would any cisgender, heterosexual character. To not explore the full range of that dynamic would be a disservice to the people who have actually shaped and influenced the art form, and I'm excited to see the show embracing that historical perspective.
Realistically, though, the show is centered around a sport which is heavily populated with gay, bi and pansexual men, as well as effeminate straight men.
