Interesting headline - its disconnected from the content of the article. Most of it is about how broken the US electoral system is.
The important point is that an electoral and political system that was designed to protect from the “tyranny of the majority” has instead created a system perpetuating the tyranny of the minority.
Americans are indoctrinated to think theirs in the greatest country on earth from a very young age. But the political system is an absolute mess - the electoral college, the senate (which is totally skewed in favour of small states), the supreme court and politicised legal system, and the embedded 2 party system.
Trump isn’t a threat to democracy. Democracy in the US has been dead for a long while now. It vaguely worked when there was a post war consensus but now it’s completely log jammed. And nobody has a plan to fix it because they can’t.