End User hereby grants Atlassian a non-exclusive license to copy, distribute, perform, display, store, modify, and otherwise use End User Data in connection with operating the Hosted Services.
For me, the key is "in connection with operating the Hosting Service". They will need to do things with your data as they move it between servers and storage and make it available to you. If you want it displayed publicly then you need to have given them a license to do so.