IANARedditor, but this reads to me as a feature of reddit.com for redditors to use. What does that have to do with the rest of the internet? Is reddit itself

IANARedditor, but this reads to me as a feature of reddit.com for redditors to use. What does that have to do with the rest of the internet? Is reddit itself not one of the amusement parks / walled gardens that this very page is decrying?