Actually, one of the things that causes "regime change"(or U.S.-backed coups, as they used to be called) is when the opposition party or parties in the U.S. or Canada refuse to question the arguments of the coup advocates.
And if this was 1973, I strongly suspect you'd be accepting the claims of the right-wing North American press that Salvador Allende was to blame for the shortages caused by the collective hoarding of food and household supplies engaged in by the wealthy in Chile.
And you should remember that, if some of us don't assume that the end of the PSUV will have positive or even innocuous consequences, it's because we remember that nothing but misery came of the overthrow of Allende, and before it the overthrows of Bosch in the Dominican Republic and Arbenz in Guatemala, and later the electoral coup the U.S. forced in Nicaragua in 1990 by making it clear they wouldn't stop the war unless the Sandinstas were voted out and who made sure the somewhat progressive government of Honduras was replaced by a right-wing state in 2009, a regime that was kept in power in a sham "re-election" only weeks ago.
You apparently think that that is all in the past...that anti-PSUV dealings are about sunshine, lollipops, rainbows and some sort of magical transformation into Scandinavian social democracy. You've forgotten that the forces which caused misery in one situation can never be capable of causing anything but misery in future situations.
Why do you think what you're pushing for can possibly lead to anything but a repeat of the nightmares of the past? Why would you trust the empire which was never on the side of anyone but the wealthy in the past?