With current Display Suite integration users can't customize social buttons label. I don't think many people would want to display the label "AddToAny buttons". Si I just made a patch to make this label to take the value from module's administration form (admin/config/system/addtoany). Specifically from field "Link text" under Buttons -> Universal button. However, default value will still be "AddToAny buttons". Patch comes in next comment.
Remark: Changing the label will also change the label under "Manage display" tab. This change will still allow to translate the label in multiple languages. Any change to label, would require a cache clear to take effect.
Postponed: needs info
4.6
Code
Not all content is available!
It's likely this issue predates Contrib.social: some issue and comment data are missing.