i don't think someone can give 100% assurance of profits in betting. there will be losses also in this game. they should be honest about it.
Just look at their answer when that newbie asked what will happen in case of loss
What if there is loss in bet? When I will get the profit after my investment and wts the minimum threshold of investment.
You will only get profit 8-12% weekly, you won't share the loss with us.
The minimum share is 0.01 BTC and you will be paid the reward every week.
So everyone that invest only shares the profit, can't be at loss no matter what happens. There is no way legitimate business can offer you that, and this ponzi (as any other for that matter) can only go on until there is constant influx of new people, as this model is not sustainable.