Kammala jumla mai zuwa: Flint yana ɗaya daga cikin fitattun masu goyon bayan tsarin mulki na Australiya, a cikin adawa da tsarin jamhuriya na Australiya. An yi amfani da littafinsa, "The Cane Toad Republic", a cikin
Yaƙin neman zaɓe na 1999. Wannan ya biyo baya a cikin 2003 da "Twilight of The Elites", wanda ya goyi bayan tsarin tsarin mulkin Ostiraliya da kuma rawar da Masarautar Ostiraliya ta taka. Flint ya kasance Babban Mai Rarraba Australiya don Tsarin Mulki na Tsarin Mulki tun daga 1998, kuma memba ne na kungiyar Samuel Griffith Society. Shi ne mai tallafawa kungiyar Monarchist League ta kasa da kasa a Ostiraliya, wacce ke tallafawa da kuma ci gaba da mulkin mallaka.