Each facet of nonsense you've mentioned is being battled by one group of skeptics or another. Off the top of my head, there's the work of James Randi, Richard Dawkins, Brian Dunning, and Steven Novella. Those people aren't fighting ideas they're afraid are true, they fear the harmful outcome of misplaced beliefs.
If people weren't battling pseudoscience, you'd see a lot more of it in your day-to-day life, and society as a whole would be much worse off. That's not speculation, it's a solid fact.