The situation prior to the current conflict was not significantly different than the situation 10 years ago. The stockpile in 2016 was sufficient to create 8-10 bombs. They were as close then as they were prior to the current conflict. The difference seems to be that Netanyahu was able to puppet Trump into the current conflict for reasons that are unclear.
The notion that military action had to be taken immediately due to the imminence of their nuclear threat is a false dichotomy between a war now or an Iranian nuke. There were other, better options and outcomes possible for US interests, but this war was certainly the best outcome for the Israeli regime.
This false dichotomy is the only way this conflict can be justified and why you insist on repeating this tired talking point. It's also an argument Israel has been making for the last 20 years. Ever heard of the boy who cried wolf? At some point we have to view the Israelis with the same skepticism as the Iranians.
I do find it interesting that you think the Iranians can be trusted when they assert their capabilities, but cannot be trusted to uphold their commitments. Your argument depends on the notion that the Iranians categorically cannot be trusted or taken seriously, but also we have to trust their threats completely and treat them literally.
At the same time, you have no problem handwaving away the genocidal threat of the president as hardball negotiating 5-d chess, but then clutch your pearls because the Iranians have chanted "death to America." We have no moral authority here because this administration has chosen to stoop to their level.
In case you didn't know, North Korea also has rallies where they chant death to America, and have been doing so for longer than 47 years. They also have nukes. They have yet to deploy those nukes.
The Iranian regime faces a similar calculus, and given the complete lack of evidence that the Iranians were gearing up to produce a nuke imminently, it's pretty clear that the whole argument for this war depends on tired talking points. Even if they were weeks away from a nuke, there would be no rational basis for the Iranians to deploy a nuke preemptively. Like the North Koreans, they might talk tough and shout death to Israel/America, but any authoritarian regime is concerned first and foremost with perpetuating their own rule.
The real question is how the Iranians can trust anything we say. We have been the bad-faith negotiators, which is unfortunate because the only palatable way out depends on diplomacy.