And I would point out that just because it's in the PHB doesn't mean the DM will allow it anyhow.atom crash said:And yes, as others have pointed out, having them appear in the MM but not the PHB means a player would have to get DM approval for using them, since they're not in the default PC races.
There's been polls here on ENworld as to who would be banning Dragonborn/Tieflings from their games. Before they even saw them, mind you.
Sure, some DMs may not allow it because it's in the PHB. But that's not much of an excuse. If WotC had stuck Kobolds in the PHB, or Warforged, I'm fairly certain that there would be many a table that the DM would say, "Uh, not in my game."