Have you met Trumps base? they’re very passionate. The GOP has been a party that paid lip service to white nationalism but then governed as plutocrats for decades.
Trump is a bonafide white nationalist. He hates the same people the GOP base hate. Non-whites, foreigners, liberals, democrats, feminists, muslims, civil rights activists, etc. He also shares the hatred of democracy that his base feels passionately about.
Donald Trump is the first GOP candidate in decades who shares the nativism, racism and hatred that the GOP base does, rather than just paying lip service to it to get elected (like Romney, McCain, W Bush, Dole, etc did).
If you haven’t met passionate Trump supporters its probably because you haven’t really been to the places where they congregate or they don’t feel comfortable expressing themselves around you.
I’d wager, perhaps wrongly, that about 30 million Americas are Trumps base who truly embrace his fascism and white nationalism, the other 30-40 million voters are enablers, low information voters, people who vote because of guns/abortion/judges/taxes/etc.