The cult existed long before Trump, cultivated for decades by conservatives. Reagan blew their dog whistles. Pat Buchanan courted them in 1992, culminating in a speech tha Molly Ivins famously observed probably sounded better in the original German.
The cult got used to believing self-serving myths, demonizing scapegoats of those myths, and nursing extravagant grudges against the designated villains in those myths in the wake of Vietnam (the press and liberals stabbed us in the back, Dan Rather, John Kerry, hating hippies, with ever-expanding definition of same). Conservative think tanks provided intellectual cover, Newt Gingrich and his allies within and outside of government pointed the cultists bile at the enemy of normal Americans and normalized an endless witch-hunt in order to bring down their Avatars of Ultimate Evil Du Jour, Bill and Hillary Clinton. But for all the effort, Newt couldnt deliver the head of Bill the Clinton to the Salome Caucus.
In 2008 was he cults supposed leaders failed to beat the new AoUEDJ, the Chicago black guy with the weird Muslim name. In 2012 they cast about for a new leader, anybody but Mitt, but couldnt settle on one and lost again.
In 2016, up against unexpectedly and mind-bogglingly weak establishment opposition, Trump merely positioned himself as the messiah the cult had been craving for a generation.
Its not the cult of Trump. Its the Cult of Jingoism, th cult of America, Fuck Yeah!, the cult of more patriotic than thou, you stinking traitor. The cult that will swallow horseshit like its chocolate as long as it despises the right people.
The Cult of Despising, those who arent happy unless theyre despising the people they like to despise.