Yes, it is dangerous to believe everything you hear. Because nowadays, every business uses media to its advantage. The majority of businesses use the media to spread false information in the market for their own benefit. As a result, believing in every piece of news is never a good strategy.
Do not believe in everything that you see not just in the news but also in social media and in other different media. Because it's a huge business and you see big article producers, they're paid a lot to hype something about a business or a company or a project that wants to advertise just the way they promote.
Sad part starts when you become part of a project, as a staff member. You end up seeing how people are not really focusing on they could make a profit from these things, but they focus on how they could charge the project owners.
I have been a content writer for news websites in the crypto world, and I have been part of marketing for crypto projects, and one thing is common there, projects pay these websites to write amazing things about them and then it gets published and people end up buying those projects and the price goes up, whereas the news website didn't even researched it, they just took the money and said ok, which is a bad thing for investors.