Workforce automation created millions of unemployed people in places far away from economic hubs, with no hope of employment in their hometowns or re-skilling for the new roles, leaving them desperate. Proliferation of mobile apps lead to an explosion in use of social media. The wild popularity of this democratic social media encouraged a culture that allowed misinformation to flourish without a lot of consequences.
Bad actors took advantage of this, and reinforced distorted false narratives. Desperate people latched onto the messages presented to them, that gave them solutions repeatedly reinforced by social media, and many took an enormous risk - they voted against their best interests in order to solve their problems with the information they had available. And that is how we got here today.