Those posts are about keeping their own faith up. If they were confident in whatever it is they are touting they wouldn't be compelled to be evangelizing.
There is a global pandemic of idiocy: it has its roots in politics, and has been rapidly spreading to include the sciences, and now, as is illustrated in this thread, the world's monetary system. Notice how it's not unusual to see the same people covering all the whacko trends.
Maybe if someone came up with a vaccine to prevent all this stupid stuff, then... uh-oh, nevermind.