To your point though...
My mom told me about some diatribe that Bill Cosby alledgly wrote about being old and tired of being tolerant and stuff (mostly about Islam). She was all "I'm surprised Bill Cosby wrote this.." And read it to me. I said "Mom, there is no way Bill Cosby wrote that." So I googled it and sure enough it was from some crotchety old Rep House member on a semi-racist soapbox circa 2006ish. I even ran across a statement from BC denying writing it.
I then had to tell my mother not to believe everything she sees on FB.