[Iana-ipr] Removal of the term "IANA" from documentation

I see this text at https://www.iana.org/help/pti-transition:

[[[ The term “IANA” can no longer be used how it has been used in the past. As a result much of our documentation has been revised to remove the term. ]]]

I could understand if ICANN/PTI were changing the bare term “IANA” to more specific terms like “IANA operator”, “IANA functions”, “IANA services”, etc., but removing the term doesn’t seem useful to me. Could somebody explain the reasoning behind this change?

Alan Barrett