I'm not sure what your point is. Everyone knew they were going to irrationally decide to threaten the ships of uninvolved third parties therefore it's not their

I'm not sure what your point is. Everyone knew they were going to irrationally decide to threaten the ships of uninvolved third parties therefore it's not their fault for doing it? Ukraine is blocking Russian oil, not the oil of random uninvolved neighboring countries. And the strait is in no way "Iran's territory" anymore than you could say it's the US's territory just because they could also theoretically block traffic through there if they wanted.