FAANG recruiters literally send the candidates emails that say things like "you should study Cracking the Code Interview beforehand". No, they aren't supposed to, and no, the incentives aren't set up correctly to prevent it (I've received these emails from Google, FB, and Amazon recruiters in the past).
We can't really go around penalizing behaviours that the recruiting side of the house is actively encouraging shrug
We can't really go around penalizing behaviours that the recruiting side of the house is actively encouraging shrug