Blog Owners can turn on a blog setting that auto-splices any vertical-post to its parent stream page. They can decide which verticals to toggle on and off in Manage Blog > Settings. https://kinja.com/manage/deadspin/settings

If you have turned auto-splicing ON for a specific vertical, you will see a toggle in the Post Editor > Distribution Tools where you can opt out of auto-splicing that particular post to the parent homepage.