@OP - don't forget the really brainwashed ones that have to post that they've successfully completed some meaningless corporate training course on WebCat.
@mfw - it is. It reallyis. I dropped off of LinkedIn 10-12 years ago, when even the fun of pointing out the hypocrisy of CEO's and Heads of States couldn't make up for the site morphing into FaceBook with a slight work-related bias. I went back onto LinkedIn a year or so ago, to search for job listings (it's still good for that), to find that it has become a full-blown social media site where users repost other people's photographs (cancer patients, military troops, special needs kids, etc.) or motivational messages .... desperately trying to increase their ratios (likes, comments, followers).
Oh - and we mustn't forget upper management and VP's (like Syrup) posting propaganda for EM and then the EM account thanking them back. LinkedIn truly has become a swamp.