No government has accepted Iranian tolls so far, but some shippers sure have; ships have been passing through the strait. Those shipments go on to countries with governments. I don't think you can actually know that there wasn't government support for any of those payments so far.

And cryptocurrency should be even better for deniability. In reality it would be a really good idea for certain governments that rely heavily on Middle Eastern oil (e.g. Philippines) to pay fees in the short term. More than a month ago the Philippines was already claiming to have "safe and preferential access", if that involves money they'll pay it. (https://www.rappler.com/business/philippine-flagged-ships-sa...)