Why do you think the CIA kept Operation Ajax a secret from the American public until 1992?

;)

It wasn’t until 2017 that Britain released documents on their part in Operation Boot.

And you think they kept it secret just for fun?

You think that if the American and British publics were told in 1953 "We're gonna go overthrow another country's government and install a brutal dictatorship because their democratic government is threatening BP's profit margins", the public would've given them a thumbs up?

Oh no. No fun intended.

I just wasn’t able to get what OP meant without that clarification.