I learned in my book history class that the advent of the printing press caused both praise and consternation. More people could access and afford good books, but it also meant that idiots could write stupid books cheaply and sell them as authentic to the masses. The Internet came along and allowed more people to access and find good information, but it also meant that any idiot could make a website and spread the stupidity. Web 2.0 supposedly could remedy that with people countering "This is not true!," yet that fails with people still covering their ears and eyes and singing "lalalalalala... I can't hear you!" Then you have a cacophony of stupidity overwhelming the logic.
At least with books, you do have filters that could theoretically keep out much of the stupidity. Reputable publishers, reviewers, peer reviews, etc. can help. Social media has no such filters. Sure, you can post a comment, blog post, tweet, etc. to counter the stupidity, but there is no guarantee your message will get through. You could be like
The Lorax (T-H-L-K-D) yelling at nothing.