I agree with most of the sentiment in the OP with a few key disagreements. OP repeatedly says Iran is not very important (not strategically important). This is clearly not true for a few reasons:

1) They control the flow of oil, as we're seeing now.

2) They provide a huge amount of funding to hostile forces throughout the middle east - Hamas, Hezbollah, Houthis, pro-Iran militias in Iraq. This destabilizes the entire region, including important partners beyond Israel (Saudi Arabia, UAE). Their support for the Assad regime in Syria and Hezbollah, who killed nearly half a million Syrians during the civil war there, also created a huge refugee crisis throughout Europe that has led to a rise in far-right parties who are reacting to the failed integration of these refugees.

3) They provide drones to Russia and instructions for how to build those drones.

4) They provide oil to Russia and China, two major geopolitical adversaries.

5) They are among the most significant propagandists that use social media to destabilize the west - having been caught repeatedly manipulating social media platforms like Reddit, Instagram, Twitter/X.

There are also some strategic benefits to the current war, especially if you're a narcissistic kleptocrat running the US:

1) We've already seen the market manipulation.

2) Every bomb dropped is a bomb taxpayers must replace; that money goes right to defense contractors

3) Then consider the American oil companies: they stand to make a lot more money from this, as their products are now more scarce and more valuable. The US, as a net exporter of oil (we import low quality oil because we're good at refining it; we export the good stuff), will make more money.

4) The disruption of the Persian Gulf hurts Russia and China far more than it hurts the US and EU. There are some US allies and neutrals who get hurt (those in east Asia, gulf oil states). But it's not a balanced impact - we definitely come out on top in the current situation in my view.

5) Electric vehicles are starting to look a lot better. Who's Trump's bff and biggest financial backer, again? Does he operate in that space?

I think the overall impact of the attacks on Venezuela and Iran sum to an attack on the hostile Russia-Iran-China axis, with the benefit of hurting some of their minor allies as well. It seems too perfect that we attack the two largest non-allied oil suppliers in quick succession for it to be coincidence. It might not be Trump's plan, but it seems like a long-standing plan to achieve a favorable geopolitical environment.