Stuff like this is personal for me.
My brother suffered through addiction, pretty badly. His life is pretty great right now, bought a house, has a girlfriend, a steady job. Do you think he needs to be reminded of how bad stuff was? He knows. He doesn't arrogant knowitalls to remind him of stuff like that, and it's also private and personal.
Reporters and journalists need to sell their shows/papers/magazines. And sadly, these days, they are willing to hurt others to get results. It doesn't matter to them if the people they interview get hurt or feel insulted. As long as it sells. That's a horrible way to treat someone. RDJ payed his dues, now let's celebrate what he has been doing over the last few years and leave his misery behind us, just like he is trying to do.
FFS, I saw the clip you're talking about. Did you see his reaction? The hurt. The anguish. When the reporter mentioned his father, you could see RDJ's chest tightening. You call that FAIR GAME? I call that public humiliation to score some points.