I think an even more unfortunate truth, with all respect in the world given to the author personally, is that "capitalism" does not even exist. It's the pilfered term of a Rothschild golem, a rhetorical hired gun, an ideological henchman - Karl Marx.
Emma Goldman's esteemed opinion notwithstanding, the scribbling of a coffee-house philosopher is not the same thing as his making a discovery. But try telling that to embittered, power-hungering exiles, all over Earth.
Marx's prescription for the ills of a free market economy was called socialism. It was not better conceived of than its fellow, but in this case we've got a definition anyway, since others (almost always Kautsky) later found a way to inject some good ideas into his nonsense (only to be reviled for it by him as a "pedant and a philistine").
As an aside, this is how the very decent and sane social democracy was born, from whence we get things like the social safety net. NOT the same as socialism! Socialism means a fully state-owned economy. Private property is stripped from the citizen and lorded over by the corrupt bureaucrat. It's a terrible disaster, just as slavery and colonialism - proto-socialism - were before it. The free market is to blame for nothing.
Eight-hour breadlines and two World Wars, in the end, were the bountiful harvests of mankind as a result of these foully-planted seeds. In the next generation the socialist world movement begun by Marx cellularly divided into Communism and Fascism. Both had a straightforward plan for harnessing capitalism - the death camp and the gulag. Both advocated annihilation to any market they could not control. As the horrified rest of Earth looked on, these two titanic pit bulls used their rival socialism cults to plunge a continent into utter darkness.
As for what your typical Marxist claims "capitalism" to be, e.g. half an economic principle discovered and half an economic system grown mad with excess, I'll just say this: it seems easy to make anything in creation look bad, summing it up in mere terms of its bodily functions, as Marx did to the free market we built the world atop of. Imagine letting Marx fill out a dating ad for you!
Oops, Matt Gaetz must be on my mind...