[3]Norman Tindale, in his 1974 classic survey of all known Australian tribes, was dismissive of Fraser's conjecture as "poor" in details, and "unquestionably the most inaccurate and garbled account ever published about the aborigines.

[5] Arthur Capell, writing four years earlier, thought to the contrary that Kuringgai/Guriŋgai denoted some substantive historical reality, and was an appropriate name for the language spoken on the north side of Port Jackson northwards at least as far as Tuggerah Lakes.

[6] He concluded under the heading Karee/Kuringgai' that the reference is to:- the language of the Pittwater people, and included the well-known Cammeraygal on the extreme south, along the northern shores of Port Jackson, and stretched as far north at least as Broken Bay.

[9] Geoff Ford in his thesis, "Darkiñung recognition : an analysis of the historiography for the Aborigines from the Hawkesbury-Hunter Ranges to the Northwest of Sydney (2010)" Chapters 8 & 9 in particular investigates the work of Threlkeld, Fraser, Matthews and others and determined that the Kuringgai were actually the "Wannungine".

In 1892, John Fraser coined the term “Kuringgai” based on his flawed analysis of Aboriginal languages, extending it across an unrealistically vast region from Bulli to beyond the Hastings River.

Educational resources, including the History of Aboriginal Sydney project and the Australian Museum, continue to propagate the misattribution, further alienating actual Guringay descendants from their cultural heritage.

The authors advocate for the correct recognition of Guringay people and their affiliation with Gathang language, urging government and community bodies to cease using "Kuringgai/Guringai" for the Sydney and Central Coast region.