The Ombudsman's full ruling showed Internal Affairs were happy to accommodate Thiel's concerns, despite describing the case for protecting his privacy in this case was "borderline".
The level of redactions received in documents by the Herald - including the entirety of correspondence from Thiel's lawyers at Bell Gully - has resulted in another complaint to the Ombudsman.
Labour Party immigration spokesman, MP Iain Lees-Galloway, said the redactions at Thiel's behest - later found by the Ombudsman to be outweighed by public interest - were concerning.
"We have a government prepared to put the interest of a wealthy individual ahead of the public interest. It also continues to demonstrate that Mr Thiel has not made good on his promise to loudly and proudly tell the world about his NZ citizenship - he tried to cover up every detail," he said.
A spokesman for Internal Affairs said: "As part of the assessment process we consulted with Mr Thiel through his representatives, considered his views, and sought to balance personal privacy with public interest considerations. "
Current Minister for Internal Affairs, Peter Dunne, said while he agreed with the Ombudsman's decision in the Thiel case, he was "satisfied generally" with the way his department handled requests for official information.
The Ombudsman's full ruling concluded there was a "very strong public interest in the public knowing that the Minister's broad discretion ... was exercised in a fair and reasonable way, on a proper basis, and without inappropriate factors or considerations being taken into account.
"In Mr Thiel's case, there has been and continued to be some public disquiet that the Minister granted him citizenship in circumstances where his connection to New Zealand was not publicly known, and even in hindsight, was not obvious".
Ombudsman Donnelly said of the importance of the case: "Citizenship is not, and should not, be conferred lightly."
Appeals to Thiel's privacy were largely dismissed by the Ombudsman, who also consulted Privacy Commissioner John Edwards who said in the report: "Mr Thiel should have been aware that obtaining citizenship in such circumstances would attract public attention."
Internal Affairs documents noted this ruling may serve as a precedent for all citizenship awards made under the exceptional circumstances clause.
The release also shows while the Department of Internal Affairs sought to release the redacted 145-page citizenship application in the days following news of it becoming public, but multiple deadlines for Thiel's lawyers to respond to this proposal were missed.
"Our client is currently in the US and we are dealing with time differences," a lawyer for Bell Gully told Internal Affairs on January 27.
The case has attracted considerable attention, with Official Information Act requests for the citizenship file received from every national news organisation in New Zealand, while international news organisations including the New York Times, Forbes, NBC, Buzzfeed and CNN also made contact with Internal Affairs seeking more information.
Representatives of Thiel again failed to respond to questions from the Herald, about either about the redaction or why he had sought citizenship in the first place.