A rip off.
In normal blackjack, if you get a natural, a blackjack, a snapper, or in other words, an ace and a ten or face card in the very first two cards dealt to you, unless the dealer has a like hand, you are paid 3:2. In other words, if you have a $5 bet out, and get a blackjack, you are paid $7.50.
With this new inane rule, you would be paid $6 instead. The house might throw in a few liberal rules in your favor, but it ain't a good deal. Be afraid, be very afraid, warn your relatives, friends, and neighbors! Agghhh!!! Run for your lives. Somebody do something about this.