I hear what you're saying... not sure what the rest of us posters are supposed to do here, whether the thread is legit or not- advise whether he should talk to the friend? (ftr- I side on RnR being legit... and if not, a brilliantly constructed and consistent/committed enough fabrication that I applaud it).
that said- this is a crazy circumstance,
to have such a connection to a missing person's case... that I can understand wanting to share. we're all interested enough to post in here, other than the people who just want to crap on RnR.
so

... don't pester your friend, RnR- especially if he's updating FB with info. let him know you're there to talk or help any time he needs and leave it at that.