The track record of Iran is very different. Even if nuclear weapons were only a deterrent they would likely embolden them to be more aggressive abroad.
The whole point of the article is that the lesson from North Korea is get yourself a nuclear weapon. If you choose to give up that ambition, you can expect to be punished. If you realize that ambition, you may survive.
It has nothing to do with the particular behavior of the country outside of their ability to achieve a nuclear deterrent. The plain lesson is deterrence works if the country you’re trying to deter is the United States.
Just so that people disagreeing with you can understand: Iran is, as I type this, sending bombs banned by 120 countries (cluster bombs, and they're banned because for they indiscriminately target civilians) on Israel. They also send their islamist guards, a few weeks ago, to finish the job inside hospitals: to slaughter the wounded. As part of tens of thousands executions.
Anyone who thinks the current iranian regime with the atomic bomb wouldn't nuke Israel is out of its mind.
I find the Iranian regime despicable, as frankly any decent human should, and I am glad they don't have nukes.
But I do not see them as the international turbo villains they've been painted as.
Your lifetime is a fuzzy reference that possibly works because your are relatively young.
Iram carried out terrorist attacks in Europe in the 80s that left tens of people dead. Iran has been linked to an infamous bombing in Argentina in the 90s.
Iran has been linked to other attacks since.
Recently, the war in Yemen and attacks on shipping routes has also links to Iran.
Iran hasn't been a "local threat".
Iran founded Hizbalah in Lebanon. You can read what Hizb had done to Lebanon on the internet. Iran exported its ideology all over the Middle East right now: Yemen, Syria, Lebanon, Iraq, etc. It is a mistake to thing about Islamic Revolution as something not interested in spreading itself.