because there are literally declassified docs that show the point was the oil and not "democracy". this is like saying the american civil war was about states rights. it's called a pretext and if it weren't for declassified docs in this case (and secessionist writing in the other case) we'd never hear the end of it (but since all that documentation does exist, it can in fact be neglected)

Declassified Documents Reveal CIA Role In 1953 Iranian Coup : NPR https://www.npr.org/2013/09/01/217976304/declassified-docume...

For the last time, the American Civil War was not about states’ rights — Quartz https://qz.com/378533/for-the-last-time-the-american-civil-w...