The economics, that is, the distribution of material goods, of human societies have always been tied to the tribal, societal and communal aspects, whether it was in primitive hunter-gatherers tribes, early agricultural civilizations, the slave economy of the ancient societies, or the feudal system during the Medieval period. There has always been a human component rooted in the sociopolitical and economic arrangements even among class societies.
The bourgeois revolution of the 18th century was a watershed moment that completely transformed human societies beyond all recognition and severed this crucial link between a society and its economy. Bourgeois capitalism transcends and repudiates the human relationships that have embedded within the societal framework for thousands of years, in pursuit of endless accumulation of capital. A completely new form of societal arrangement emerged following the Industrial Revolution.
For all their flaws, they achieved something that was truly progressive in a society that not too long before was backward and full of violence. It was a mark of progress for humanity. We can and should accept all that and still admit its flaws and mistakes.
Do not let anyone erase that achievement. Do not let anyone convince you that the Soviet Union was a defective system that no longer has any relevance to our society today. Do not let anyone rewrite history. You’ll find yourself fighting an even worse uphill battle if you concede on these grounds.