Rakeback shouldn't be over 100% on any casino or any game, because that could be exploited, if a user finds out they can have this huge rakeback, then they could make money just by playing and not by winning bets.
I hardly recommend web3pokerr consider changing that number, before users start abusing for such a generous offer from the site. Because is about time to see that happening.
Nice that you are concerned but I think many gamblers don't and they will like it more. If the rakeback is already that high, I think there is no need for us to exploit it anymore and exploiting is also not easy as it sounds but it needs some advanced programming knowledge if I'm not mistaken. Make sense because the benefits of doing it or once we get successful are also a lot.
It may be worth it but of course I won't encourage those skilled users to commit it, as it was still a wrong doing and karma is waiving at you once you insisted to. Anyways, we don't know if it was also one of their tactics to garner players around the forum and I'm afraid that the stats that we see here are not really legit? Hmm..