No, this is incorrect. Note "(other than Network Content posted by individual “Subscriber Content”)"; this refers to the stuff that users create and post. See t

No, this is incorrect. Note "(other than Network Content posted by individual “Subscriber Content”)"; this refers to the stuff that users create and post. See the "Subscriber Content" heading below. You license the content you create to them: > any and all content [...] that you provide to the public Network (collectively, “Subscriber Content”) is perpetually and irrevocably licensed to Stack Overflow You still own the copyright to what you've written.