Thank you for sharing this ... Social Media Campaign is a misnomer. Especially, since Social Media 'marketing' is only one tactic in an overall communication plan. And make no mistake social media is in the communication section of a marketing plan Sadly, many new creative producers (musicians, authors, writers, etc) don't know how to market their product and that makes /her/him an easy mark.
Marketing is not PR and PR is not Social Media... and none are SALES!
As for authors not selling their books on social media - that's correct. Social media is a communication channel where the author "sells" her expertise. She doesn't say "buy my book." any more than United tweets "buy my tickets" or Chase tweets "deposit your money" or Beyonce post on instagram anything but lifestyle and fashion. Remember her infamous "the link is in the bio" on Instagram? The "BeyHive" is real. But I digress.
Social media is for building relationships. Using Social media, an authors illustrates how her book can solve a problem, take a reader on an adventure, teach a lesson, etc. Social media is for helping those in your market achieve their goal. One can do this with any book...fiction or nonfiction - every book has something to teach.
My first novel "Sleeping with a D-Man", illustrates how a young woman can survive the ensuing apocalypse after conjuring up hell on earth just by dating a wanted man.
The whole time I was on Xanga, Myspace and a little on Facebook all I talked about were "relationships". I even co-hosted a popular blogtalk radio show "relationship playbook" and grew our page to more than 100,000 followers. I wasn't really a relationship expert - I helped people to see the unseen in their relationships and that's how I ended up soft-selling my novel.
A good PR consultant would have advised this author of that one key tactic to reach her market and gain followers...help someone realize their dream and they will sell your product by their word of mouth. That is what Social Media is Word of Mouth Marketing and it is taboo to talk about yourself - you let others do it for you.
If a PR person is advising her client to "sell" anything on social media then her client isn't going to experience much success.