Good news then if that website had it removed.
The discussion about having these bets being good or bad depends on the perspective of the gambler and it won't stop until both sides agreed to others' opinions and perspectives.
Do you really think that it would be removed? No it wont but if the time comes that no gamblers will be playing on the site due for that reason then they might really close in the end.
but for legal aspects then i dont see that they would really be having any violation.Its just unethical but cant really be sued or punished on offering this kind of line.
Its up to gamblers if they do saw that this one is inappropriate for gamblers to bet on since we do talk human lives on here which it isnt really just right to make fun or make bets on it.
Just let them bet if they do continue on such behavior because people will be eventually having their own impression that will result neither they would stay or find another one.