Yeah, but I can see why people want to narrow down to a genre. When I'm in the mood to fly a spaceship with 6DoF and engage in trade and space combat, I'm not going to fire up Nier Automata or Soul Cailbre or Dead or Alive 5, as those are entirely different games of a different genre. I used to fire up Elite to scratch the "I want to fly my spaceship and trade and engage in space combat" itch, and now I fire up X4 Foundation instead, so to tell me that X4 can't be offered as a competitor to Elite is patently wrong.Although I'm a fan of categorization and definition because they allow for focused conversation, there's some weight to the notion that it is all irrelevant. We are meat staring at a screen. The games that entertain us vary in structure, style and substance, but they all do the same thing for us. Whether I'm playing ED or Kenshi, which are two radically different types of games, I'm essentially doing the exact same thing: being meat interacting with a screen.
Now interestingly, if I want to shoot at people (other players or NPCs), competitors to Odyssey that come to my mind are Call of Duty, Battlefield, Fortnite, and a variety of other FPS games I've played over the years, none of which fall under the "space game" genre.