Maybe he couldn't handle the risk associated with bitcoin. Maybe he didn't find a way to handle it. And he's stubborn and now spends time trying to get other people in his boat.

BTW. Knowing about bitcoin but not having the guts to hold it is a sign of weakness and it exposes people to themselves as time goes on so far that they are not as cool and level headed as they thought they were. And in this case tallim just goes with that it seems. "This is me now"