Trump's agenda has been widely known, disseminated and broadcast on all channels for almost a decade, and most of it is based on alt-right/Evangelical Christian/neocon beliefs that have been around for much longer. Trumpism has become a worldwide political movement, it's nigh inescapable.
Maybe there were some rubes, but most people who voted for Trump knew exactly what they were voting for, because it's what they voted for in 2020, and in 2016, and what they wished in their heart of hearts would happen ever since Obama did 9/11.