Interesting, I am a recruiter turned software engineer and have the exact opposite feeling. When I was a recruiter it was a fantastic way to find niche candidates and just maintain a casual discussion with my best candidates in general, as well as publish relevant news to my connections.

As I was undergoing the transformation to engineer, it was a fantastic platform for me to reach out to people in my new industry and city, people who had gone down my path before, mentors, and etc. Then when it was time for job search, LinkedIn and Angel.co had the highest quality postings. Also, on LinkedIn when looking at a job posting I could see if someone from my bootcamp or university worked there, as a link right under the job posting.