Given the competition out there, you just have to misrepresent, overemphasise, paint in favourable light or use a good old lie to sell your product.
We've long since accepted this as 'necessary evil' - everywhere - on TV, in print, on the streets and online.
And so the 'mind-fucking' techniques have evolved over the decades - from 'facts' about products to emotional button-pressing voodoo, subliminal messages and click-baits.
The doors to 'bullshit' are wide open in our minds, even though we think we can filter facts from crap, there are techniques that get us too.
"The spread of misinformation" is not a new phenomena at all, in fact it's been here since before the dawn of the Internet.
What changed is the object of bullshit, not the bullshit itself.
In other words, "Enlarge your penis" is coming to your social network news article about your local politician and you won't believe it till you see it!