Sounds pretty obvious, why would they be doing something that would hurt their business metrics - which are correlated with increasing ads ROI since it unlocks higher spend.
I think this might be a general reference to the ever declining efficacy of manual targeting after ATT/GDPR.
So even if automatic (black box) targeting merely maintains its effectiveness, it’s relatively better for advertisers to shift spend towards it at the margin.
this one screams 'citation needed' and is not what I'm hearing from people in the field. Would anyone care to share their experience?