Boomers don’t pay attention to 4Chan. It’s such a small segment of the population.
Gen X and Millennials pay attention to South Park, though. They see that “douche vs. turd sandwich” bit and think “Hey, that applies to our situation now!” Then they stay home in protest, because they don’t like certain aspects of Hillary’s campaign and ideals, as opposed to hating every aspect that Trump does or represents.
It’s not about picking the “lesser evil”. It’s about having realistic expectations and analyzing the situation as a whole. During the primaries, you pick the candidate you want. During the general election, you pick the party you want, even if your primary pick didn’t win. That’s it.