I really consider getting rid of my car. I bought it a year ago, but it's only ever sat in the driveway, I never use it. The funny meta-thing about his post, is that the content he feels adds 0 value, is in fact his own post. He is literally making a post about a tool he doesn't use. It's the equivalent of a person making a blog post about a tv series they don't watch but have seen the trailer for; no actual value to…
Well, in your metaphor he decided to get rid of all cars, forever. There are probably a ton of people who blog about that. Since there is no alternative for Linkedin and it is defacto the only professional social network out there, it is a categorical decision where quite a few people are wondering how it would affect them, of they did the same.
In Germany there's XING which I think has a similar purpose (professional relationships, both for contractors as well as employees) and is relatively popular AFAICT. I'm not on XING, but what I heard about it from colleagues is that when IT contracting was at its height not so long ago they got several "cold" contacts per week from desperate people (MBA types, mostly) that have neither customers nor projects nor professional experience. Don't know if this is representative of XING; it might actually be not half-bad. But then the way the consulting business works here is that customers rarely approach freelancers directly and use agencies instead.