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.