It is obvious, if new players are increasing, the marketing plan and advertisement of the casino is effective. And they have these features that these new players is looking for. I have read the recent post about rewards. Blakcjack.fun is to generous by giving bonuses if players are active in chat, participate in voting, and more. It is like a domino effect bonus where it starts on a fund deposit bonus.
Yes indeed recently they added some interesting features like fixed rakeback 20% or 1 hour rakeback 70% next maybe cashback
latest update bonus rain added to bonus balance and take 70x wager so really nothing free

we have to compete with whales for prizes.
I think it is obvious that there are a lot of whales here, but the marketing they did with all the cash back and so forth did really open up a lot of doors for that to happen as well. Consider this for a second, you and I may not gamble millions, but if you were a whale who wager one million dollars per month, you are projected to lose at least 10k dollars right?
Probably a lot more if you are unlucky, however if there is a reward system like this for people who gamble, and people who lose, then how would you feel? It wouldn't be just chump change, it would be a whole set of gambling for a few days all going back to your account, that is why they are growing so fast, they did something whales love.