>>3812612The argument is about whether something is scary, and how fear in horror games work.
RE games are generally not scary, but they're not known for being scary. Since RE4 the series has been mostly known for its gameplay.
But as far as horror games go, RE isn't particularly scary because it focuses on robust survival-action gameplay, while Ao Oni is scary, but doesn't really offer much gameplay beyond basic RPG maker "interact with the environment" stuff.