There are a lot of older people who are intelligent and uneducated but have a really tough time distinguishing "fake news" from "real news."
My sister is in her 50s, is intelligent and kind-hearted, and winds up linking to fake news sites alllllll the time.
A lot of those sites are absolutely insidious. They look like reputable news sites: your same basic layout as any mainstream news site. Frequently updated with multiple news articles per day. Many even sprinkle in a lot of innocuous syndicated stories from the Associated Press or some other press service.
But... look a little closer and all of their original content pushes some particular agenda.
For example, my sister linked to one that looked pretty legit. Had a bunch of soft news stories. But, look a little closer.... and there were thousands of disturbing articles about how it was harmful to have abortions or be LGBT.
If a publisher has an agenda, okay. That's fine. We all have viewpoints and agendas. But masquerading as a neutral mainstream news site, so that you grasp for some unearned credibility from folks who aren't tech-savvy enough to know the difference? Yiiiiiikes.
Some folks will point out that this criticism could be applied to Fox News or MSNBC as well. I wouldn't totally disagree, but what I'm saying is that there are fake news sites out that that are waaaaay more extreme and insidious.