Iran has been funding and arming groups which threaten maritime security for a while now. They also have been obviously attempting a nuclear weapons program while saying if they achieve their aim that they will do crazy shit.
I guess the games you think are stupid depend immensely on your priors.
Are you referring to Ansar Allah? Do you know why they decided to shutdown Bab Al Mandab?
So we are going to ignore the JCPOA? Also, the rumor is that there is another player in the region who has undeclared nuclear weapons and refuses IAEA inspections. Should we bomb them next?
Nukes is irrelevant. If someone dies it doesn't matter at all if it was a nuke or a conventional weapon. Nukes can do a lot more damage in one go, but if you are killed by something else you are just as dead. Iran was clearly working on killing people by non-nuclear means as well.
I guess the games you think are stupid depend immensely on your priors.