I know, but when he says this he is assuming that the alternative to playing one hand is playing multiple hands also with max bets out, and this is not the only alternative, since you can place your max bet in the box where you have the ace tracked and play minimum bets in all other boxes, either for steering purposes, or to cover that max bet by reducing the chance of the ace going to the dealer.
This is something that every single sequencing team I've seen play does.
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