I am terribly conflicted on this. I am 32, and if it wasn’t for my wife and kids, I could very very well be in the same situation as MH.
I am also in IT, but my parents and brother do not use FaceBook, social media, etc. I have a FaceBook, but I do not use it. My parents don’t even have internet.
I didn’t have a falling out with my parents or brother, but we simply do not talk very often. I left my home when I was 17, was in the army for a long time, and have now worked several overseas jobs. None of them have ever lived any more than 20 miles from our family home.
The point is, if I was MH (living the exact life I live now) my parents and brother, cousins, etc may wonder what I am up to or what I do now, but have a very, very low likelihood of seeing a flyer (On any platform) for a somewhat obscure deceased man. I also doubt they would try (or remotely know where to start) actively looking for me on the internet.
People also have odd behaviors. As mentioned in an earlier post, my dad thought I may have died in a helicopter crash, and instead of just texting me, he waited for me to contact him. I have a son of my own now, and I would have been trying to get a hold of him the moment I heard about the crash.
MHs case just goes to show how the complexity of human nature and existence can never be fully explained or predicted based on information that can only be highly suggestive as to how the person and his loved ones lived their lives.