This is the level of stupidity brought about by social media. Prior to social media, sure, there was stupidity present in the world, but not to this extent. These people are just absolute imbeciles.
I read something a while back that basically said the level of stupid has not changed. What has changed is the ability to reach the stupid. Basically it's giving the fringe a voice louder than they previously had due to financial restraints.
Prior to the internet, it was too costly for newsstands and publications to exist with minimal access to audience thus making media more centrist. Now that you can setup a website with shock headline then allow the audience to amplify your message, these sources are able to make significant gains vs tabloids of old.
So really, this is just the evolution of misinformation and no one really knows how to deal with it.