Funny you should say that because I was thinking the same of you.
...After a review of recordings of telephone conversations between Nixon and Henry Kissinger, Robert Dallek concluded that both of them used the CIA to actively destabilize the Allende government. In one particular conversation about the news of Allende's overthrow, Kissinger complains about the lack of recognition of the American role in the overthrow of a "communist" government, upon which Nixon remarked "Well, we didn't - as you know - our hand doesn't show on this one."...
https://en.wikipedia.org/wiki/1973_Chilean_coup_d'%C3%A9tat
Big difference between US being peripherally involved and US taking Allende out as you claimed.
And your own source backs what I wrote.
Wikipedia said:
Following an extended period of social and political unrest between the center-right dominated Congress of Chile and the elected socialist President Salvador Allende, as well as economic warfare ordered by US President Richard Nixon,[2] Allende was overthrown by the armed forces and national police.[3][4]
Note, he was overthrown by Chilean forces, not US forces and there was "political unrest" preceding the overthrow.
On 22 August 1973, with the support of the Christian Democrats and National Party members, the Chamber of Deputies passed 81–47 a resolution that asked "the President of the Republic, Ministers of State, and members of the Armed and Police Forces"[29] to "put an immediate end" to "breach[es of] the Constitution . . . with the goal of redirecting government activity toward the path of Law and ensuring the Constitutional order of our Nation, and the essential underpinnings of democratic co-existence among Chileans."
The resolution declared that the Allende Government sought ". . . to conquer absolute power with the obvious purpose of subjecting all citizens to the strictest political and economic control by the State . . . [with] the goal of establishing a totalitarian system", claiming it had made "violations of the Constitution . . . a permanent system of conduct." Essentially, most of the accusations were about the Socialist Government disregarding the separation of powers, and arrogating legislative and judicial prerogatives to the executive branch of government. Finally, the resolution condemned the creation and development of government-protected armed groups, which . . . are headed towards a confrontation with the armed forces. President Allende's efforts to re-organize the military and the police forces were characterised as notorious attempts to use the armed and police forces for partisan ends, destroy their institutional hierarchy, and politically infiltrate their ranks.
It can be argued that the resolution called upon the armed forces to overthrow Allende if he did not reform, as follows "...To present the President of the Republic, Ministers of State, and members of the Armed and Police Forces with the grave breakdown of the legal and constitutional order ... it is their duty to put an immediate end to all situations herein referred to that breach the Constitution and the laws of the land with the aim of redirecting government activity toward the path of Law "[30]
This was the legislature of Chile, not Congress of the United States by the way, just to avoid any confusion of where the primary impetus to overthrow Allende came from.
Just because he was a left-winger and just because Pinochet was a bastard too does not make Allende a good guy.