Odds are about 1 in 1713 (not counting pushes), meaning over 17000 hands have to be played on average for it to happen once.

So over 170,000 points have to be risked. Assuming a standard ~43.31% win percentage in blackjack, 96373 points will be lost for every 1000 won from the promo.

And it's generally accepted that the SBR casino has lower odds than that, so whoever plays just to win this is probably going to be hurting