You are right, though there are genuine bulk of information on the Internet but there are also many erroneous and fake information on it. It is full of unverify information and it's very important not to take everything on the Internet as the real thing
It very important to further research on things you see on the internet before believing it. Remember, many people gets scammed through the internet. The same thing apply to real life, enough investigation and research is required on things we hear before believing them.
most of the time people do research but what happens is the following:
person X wants to make money on the internet, they go to google and search: "how to earn money on the internet" and then there are many sites to earn money and all of them sites that deceive and lie people that because someone creates a website, post content on site and other people also create site but are lazy and for that reason copy all malicious content of the site they find. so the lie spreads to many sites and people even when doing research will find malicious information and have lost money
Search engines are also allowing it, as long as they pay to be at the top of the results page. Well, it's true that they could earn a penny, but it's not worth it to work hard for it because you're only enriching the website's owner! People are becoming more aware of it, so they are conducting extensive research and crowdsourcing. When it comes to news or whatever else, social media comes first because anyone can post and spread fake news. The best way to avoid this is to go to a reputable page or site and confirm if it is true. The key is to do research before putting your trust.