The ambiguous wording of the name was brought up by multiple people when the feature was introduced; see:
https://forum.inaturalist.org/t/new-dqa-does-evidence-related-to-a-single-subject-mean-the-same-individual-is-in-all-photos/49220/
https://forum.inaturalist.org/t/easy-way-to-mark-multiple-species-observations/278/194
So staff is aware of the issue.
I see that the German translator of the DQA has rendered it as “all evidence relates to same organism”…