Intentionally dead-beating is a form of throwing games BG, i guess i haven't made it clear enough for you.
By not taking turns always gives an advantage to someone else, A.K.A. not getting his/her bonus not broken by the dead-beater, lower cards bonus,....
It's also gives a disadvantage to the other players that are playing that are block off by the dead-beater to break the active player's bonus, and so on.