I do like and occasionally play dubcon/noncon and I get it: Whether someone's into diapers or fucking in a mermaid costume or likes nipple clamps or whatever is just this weird little - and honestly, private - detail about them that's no one's business but theirs and their partner(s).
Whether someone's a rapist? That's a big fucking deal with ic consequences if people learn of it.
And for a friendly, sex positive world literally fueled and protected by people getting their freak on? Do you really not see the difference between noncon and all other kinks for this scenario? Do you really not get why it doesn't fit the setting OP wanted to build?

And I wouldn't come down like that on OP for not articulating their reasoning very well, either; people are often bad at being able to articulate just why something feels off to them. They just know that it does.
Add in not wanting to make people feel like you're kinkshaming them and you get vague and sometimes illogical answers when a simple "I'm not really comfortable with noncon oocly so I wanted to build a game with a premise resting on ic sex positivity and consent, hope you'll find a game that fits your kinks, though, anon!" would have sufficed.