The reason it’s usual is because all sites with upload features need the right to host what you upload. Facebook, for example, has the exact same thing. “Permi

The reason it’s usual is because all sites with upload features need the right to host what you upload. Facebook, for example, has the exact same thing. “Permission to use content you create and share. [...] when you share, post, or upload content that is covered by intellectual property rights on or in connection with our Products, you grant us a non-exclusive, transferable, sub-licensable, royalty-free, and worldwide license to host, use, distribute, modify, run, copy, publicly perform or display, translate, and create derivative works of your content” https://www.facebook.com/legal/terms https://www.facebook.com/legal/terms