Why do I have to agree to terms of service just to upload a profile picture in Blackboard?

Explains why acceptance of TOS is needed to upload a profile picture

Profile pictures, or avatars, are hosted by the MyEdu platform.  The content is visible to other users such as other students in your class and instructors.  That's why additional agreements are necessary.

For more information regarding Blackboard enhanced profiles, please see https://help.blackboard.com/Learn/Instructor/Getting_Started/Profile