This is like saying the idea of solar panels is bad because capitalists work against them to destroy their reputation. Judging a system based on the assumption that theres someone else trying to destroy it is very simple minded.

In many of these cases, the political system which couldn't withstand coups were democracies. Does this mean that democracy isn't useful? Are you saying that democracies should forbid socialists from being elected since if they get elected then america will intervene and the democracy will cease to be useful? Sounds like you don't care for democracy and self-determination of nations. Bonus points will be awarded for being able to make your point without a potion metaphor.

The capitalist apparatus requires emmense effort to maintain. Military, police, propaganda, bailouts,... Its not self sustaining and its not natural. For comparison, cooperative, democratically controlled workplaces, have greater survival rates than their conventional, privately owned firms. Not to mention workers or more likely paid a living wage, have greater job stability and satisfaction, and just as likely, if not more so to lead to innovation. Its literally proven a better economic system, but yet some still think it offers empty promises.

You're discussing with brainwashed tankies who can only answer "what about xyz in the west" to any kind of, even constructive, criticism.

Lots of anarchists are like that too, a shame because there is surely something to take from those kind of ideas.