People including leaders constantly ignore the facts. "This country has dangerous weapons, we must invade!", "So and so says the right words about an emotional issue, so I'm voting for them.", "I don't care what the numbers say, climate change doesn't effect me...!", and so on...

I had someone tell me that complex applications needed to be hosted in the "cloud" because that's cheaper. They totally didn't want to hear the details of Stack Exchange, which buys their own servers to power one of the internets busier sites, because it's actually cheaper. Or they use a combination of Microsoft and OSS technology, because they are smart and pragmatic.

Once you learn that most humans are irrational, then you learn to deal with it. Or you may exploit the situation for your benefit, if that's your style...