why do some bonuses have requirements that are literally impossible

saw a new bonus pop up today, but the rollover is something wild like 50x and the allowed games don’t even cover most of what i play. blackjack excluded, of course. and if you use live dealer, like i do, it only counts for 5% of the wagering. even their own promo terms take a phd to interpret sometimes

tried running the math on if i could ever finish the wager before busting, and the odds look like trying to outpace a snowblower in july. maybe these bonuses are just fake carrots. anyone actually finished one of these without going broke or needing to buy a new keyboard from rage?