What other President would make that kind of threat? You have to speak their language and Trump knows how to do that.
Yes, that would raise gas prices but what is now happening is other places are ramping up their oil production and when this process is complete the Persian Gulf will not be so important an oil source for the world. U.S. producers, for instance, have been reluctant to ramp up production out of fear of a leftist regime regaining power, but this is incentivizing them to o so. If Iran wants to charge a toll why shouldn't we as well? Then the other countries - Venezuela, Mexico, the U.S. etc. will have broken the backs of OPEC and Gulf oil will become just one more source out of many. The world needs that - Irans one hole card will be gone in due course.
That's what Trump means when he says time is on our side and w hold all the cards. The only problem is, will the American People see that before pulling the rug out from under him?
Btw threatening to impose tolls on the strait is intended to push the Europeans into pressuring Iran. It might work too. Europe is afraid to stand with us now because they let so many Muslims into their countries but the threat of rising oil and gas prices may make them grow a pair of danglies. Their native populations are already restive with high energy prices.