the big win seems to be that the Straits of Hormuz (that were open with no restrictions at the start of the war) are now open. Well done Tango genius.
And whilst for the next 60 days Iran will not be taking money from vessels passing through it does seem that after that they do intend to and my understanding is that whilst a "tariff" is against International Law (UNCLOS), charging for services (eg safety inspections, environmental checks, navigation aids, etc.) is permitted.
Also, the laws preventing a tariff are under UNCLOS which has never been ratified by Iran so it becomes more complex. eg US is not a member of the ICC so does not abide by any of its requirements so can we expect Iran to abide by Conventions it has not signed up to?
And whatever basis for ships passing through we end-up with, Iran no longer has any need for nuclear weapons, it now has something far more powerful. Many argue that nuclear weapons are more a deterrent than anything likely to be used (again). Whereas the Strait of Hormuz is a true weapon that can be set off at virtually no cost with no delays, causing no deaths, no defencive systems can intercept, no Iron Dome protections, etc. yet has massive and immediate impact across the entire world.