Fact checking, having a degree of critical reasoning, etc. are all good, but fake news succeeds because it says something you really want to be true. It may not be the specific (fake) events reported, but certain it appeals to the underlying worldview/deeply-held beliefs. That's the hardest part to fight. It's confirmation bias and more. Seeing the fake news disproved can feel like your worldview is getting attacked. That's why many people double down when confronted with fact checking.

To take the example of urine-drinking or unrealistic survival shows, many people (with little or no outdoors experience) believe that survival is about taking desperate, dangerous, physically, and possible mentally revolting exhausting measures. Common-sensical stuff like "stop, collect yourself, check the map that you've obviously brought with you" just doesn't make as deep of an impression as rappelling down the side of a mountain or, yes, drinking your own urine. This is a sort of confirmation bias at work.

Similarly, many think about fighting off the "bad guys" when it comes to survival. That's why some internet discussions about survival center around caliber and firearm choice. Some people have a bug out list that has like 40 lbs of firearms and ammo and an insufficient amount of food and water. Again, this sort of stuff responds to something psychological.

Alright, so these survival examples aren't as good as political ones, but we don't talk about politics here. Developing the ability to effectively assess and process information that contradicts the way you look at things is incredibly valuable. Most people don't have it, and we end up with more urine in the news than is decent for civilized company.