This is inaccurate. The no-college degree bloc broke roughly 50/50 by party in 2020, with a heavy variance by region (blue states biased their no-degree voters towards Dems / red states biased their no-degree voters towards the GOP).
The biggest indicator of how your state will vote is
how much your state relies on fossil fuel exports for its state-level GDP
The "low-education Trump voter" isn't voting Trump because of education, they're voting Trump because they're earning high salaries doing oilfield and related work. This creates a natural sympathy towards Republican mega-donors, who can then tap into additional social institutions - sports talk radio, mega-churches, universities and business centers - with that explosion of surplus revenue.
Fossil Fuels industries have bankrolled the Republican Party since the 1950s. Its why Republicans love a good war in the Middle East and what drives a bunch of our alliances/conflicts in Latin America, Eastern Europe, West Africa, and the South Pacific.