Why did 4Chan Elite get taken off the App Store?

This really irks me. I read that it was taken down because of "innapropriate user generated content". If you take down 4Chan Elite because of user content, you may as well take down Safari too. The app is clearly marked 17+. I want to know why it was taken down and if there will be a time when it will be put back up.

Thank you for your time.