I just ignore the posts, its mostly bullshit corporate propaganda and public asslicking.
LinkedIn is great to find a new job if you build your profile correctly. Work experience, skills, etc Usually recruiters can find you based on that. I receive at least 1-2 offers monthly based on this alone.
Also the job section is great, you can set alarms for certain types of positions with tons of criterias, like location, type of work, specific skill required, etc