I heared this.

✌️

Not sure what youre talking about, or how any of that follows.

The simple fact is that the notion that the US did not need to nuke Japan is a well-respected position among historians.

Admiral William Leahy, Truman’s chief of staff, put it this way: “The use of this barbarous weapon at Hiroshima and Nagasaki was of no material assistance in our war against Japan. The Japanese were already defeated and ready to surrender. In being the first to use it, we adopted an ethical standard common to barbarians of the Dark Ages. Wars cannot be won by destroying women and children.”

https://www.wagingpeace.org/were-the-atomic-bombings-necessary/

https://www.historyonthenet.com/reasons-against-dropping-the-atomic-bomb

https://jacobin.com/2023/08/atomic-nuclear-bomb-world-war-ii-soviet-japan-military-industrial-complex-lies

Alperovitz further highlights that the Japanese had initiated peace envoy missions as early as September 1944, reaching out to figures like Chinese Nationalist leader Chiang Kai-shek by December 1944 and engaging with the USSR in April 1945. That the Japanese were interested in negotiating a peace was well known. Moreover, the Americans knew that there was a potential for a surrender without necessitating an invasion as early as April 1945, provided there was clarity in the surrender terms.

The argument that the bombings prevented the necessity of an invasion is undermined by the very cities that were chosen to be bombed. It is now known that as many as nine atomic bombs were proposed to be used tactically against Japanese military targets as part of a planned — though never authorized — invasion. That two of those bombs were ultimately used against cities of no particular military value is evidence that plans for an invasion had already been abandoned by August of 1945.

The potential for a massive confrontation between the Red Army and the Kwantung Army in Manchuria introduced the prospect of the Soviets seeking equal participation in subsequent conflict-ending talks. This would have positioned them to assert a stronger claim over the region, resulting in gains that could far exceed their initial claims to territories lost in the Russo-Japanese War of 1904. Consequently, the atomic bomb, instead of being used tactically, evolved into a strategic weapon of terror intended to jolt Japan into immediate surrender.

They could be dialed down lower, but even a "small" tactical nuke is bigger than what got dropped on Japan.

It's not about size, it's how you use it. For example, a tactical nuke could potentially be used at sea to destroy a fleet. Depending on where the fleet is, this could potentially be done with no direct civilian casualties.

And I have no idea what you're second rambling source is trying to say.

Really? It's pretty clear cut: the Americans dropped the nuke to primarily rule out Soviet influence as opposed to being a decisive means to end the war. This isn't even a fringe opinion among historians these days - I'm surprised you haven't heard this take.

https://www.historyextra.com/period/second-world-war/atomic-bomb-hiroshima-nagasaki-justified-us-debate-bombs-death-toll-japan-how-many-died-nuclear/

Militarily Japan was finished (as the Soviet invasion of Manchuria that August showed). Further blockade and urban destruction would have produced a surrender in August or September at the latest, without the need for the costly anticipated invasion or the atomic bomb. As for the second bomb on Nagasaki, that was just as unnecessary as the first one. It was deemed to be needed, partly because it was a different design, and the military (and many civilian scientists) were keen to see if they both worked the same way. There was, in other words, a cynical scientific imperative at work as well.

I should also add that there was a fine line between the atomic bomb and conventional bombing – indeed descriptions of Hamburg or Tokyo after conventional bombing echo the aftermath of Hiroshima. To regard Hiroshima as a moral violation is also to condemn the firebombing campaign, which was deliberately aimed at city centres and completely indiscriminate.