There are users that also seeks for the bonuses that the casino can give back. As far as I see it, some reputable casinos tend to decrease their rewards overtime, that's I think the reason why some players are willing to play on newly created casinos. Well there are many new popping platforms that seems good so it might be worth a shot.
We can use these high bonus rates as one of our marketing ploy to be able to attract more people to sign up on our referral links but first it will be better to check the casino itself if it was legit because we may only waste our time and others time on promoting it if they are a scam and we don't want to be blamed by the people who we referred.
As long as those people like what are offering to them, they might love to see more new casinos from us. It only suck if a casino decrease their bonus overtime. These casinos deserve to have a decline in their player base. They are earning more already, they rather increase their bonus than decrease them.