Why am I hated on reddit.com for being 12?

[The Doc]

The Website is not intended for users under the age of 13, and Service Provider does not knowingly collect personally identifiable information from users under the age of 13. Such users are expressly prohibited from submitting their personally identifiable information to us, and from using portions of the Website for which registration is required, such as our forums and chat areas; any information submitted by such users will not knowingly be used, posted, or retained by us.
I think this is pretty standard for websites in the United States (my rough understanding is either a service must say it is not intended for kids under 13 at all, or that kids under 13 are only supposed to use the service with parental participation and not sign up alone).