Yes, the basic strategy assumes the dealer does not have a ten in the hole. Even in Europe where the dealer doesn’t check the hit/stand strategy is still the same because if the dealer has a blackjack the player has no hope anyway. When the dealer has an ace, assuming no blackjack, the probability of making 17 or more is 83.3% when the dealer stands on soft 17. So standing is not even a very borderline play, the odds definitely favor hitting.