Baumi
Adventurer
The beginning of the MM Racial Traits Section clearly states that these are for NPC's and that these traits are more in line with moster powers than with player character powers.
The last Sentece is also an explicit waring to DM's: "The DM should carefully consider which moster races, if any, to allow as PC in his or her campaign".
I don't think that it is a big problem to let a player have one of these races. But if this leads to an unbalanced player than it is the fault of the GM to houserule it that way and not the fault of WOTC who clearly warns about that.
The last Sentece is also an explicit waring to DM's: "The DM should carefully consider which moster races, if any, to allow as PC in his or her campaign".
I don't think that it is a big problem to let a player have one of these races. But if this leads to an unbalanced player than it is the fault of the GM to houserule it that way and not the fault of WOTC who clearly warns about that.