It's not about the reward, it's about him fishing for Freebitco.in referrals.
He pays a small price in hopes you get hooked to the website and make him money
and it is a perfectly legitimate way to get to a referral. He will spend their own money on that and takes the risk, it may not pay off for him. I have seen many similar services where it is possible to buy referrals of different levels, nothing new.
I see no reason to attack AnoniX1 this much, he offers nothing illegal and seems to be a completely legitimate method of payment.
Yes that was fishing, totally. Similar like you share your link on forums or some ads of internet, triggered to play after the next two weeks. We could assumpt that you already clicked link on ads, and you don't care about who is. cause you came for free roll, nothing to lost.