Right. I can't wait to see you apply for a job as a digital marketer for IBM specializing in social media.
I am on Linkedin and Facebook and my authenticated Columbia, NYU and CUNY (City University of New York) affiliations are plain to see. I also have user accounts on technical sites such as codewars.com and trueability.com and career sites such as careers.stackoverflow.com (invitation only) for which I login through my Github, LinkedIn and Facebook accounts.
Your attitude is your own business. Have it your way. It's your life, and you are entitled to your own preferences. Especially if it works for you. Everyone has the right to their own desert island.
I take the attitude that success in social networking is an integral component of my success as a professional. It matters to me that my professional connections be top quality, because I really believe that I am who I hang out with and that the quality of my professional connections that I have accumulated over time make a strong, clear statement about me. However, my attitude is purely my choice, I have thought my choice through and I have made my choice works for me.
If all you do is put up a token presence on social media, you might as well not be present at all on social media. It's either you do it right or don't do it at all. But you can do it right only if you really believe that it's the right thing to do. Otherwise, you are faking it and most of us will see through that.