thats what I think, too...
it's strange that you don't find Satoshi on any popular social media site. if he'd be a known hacker or computer freak specialist, you'd be able to find him nowadays in the internet
That is actually quite normal for a hacker/specialist.
I also try to keep away from any social-oriented sites, because they do great harm to one's privacy.
Most of normal people don't realize what these sites are doing to them, so they don't care. People who know how stuff works much often avoid such risks.
I am doing that myself, and many of my colleagues which are IT specialists do the same. What is put into internet just once, stays there forever.