yeah let's look at some actual numbers shall we

Professor of Economic History, Robert C. Allen, concludes in his study without the 1917 revolution is directly responsible for rapid growth that made the achievements listed above possilbe:

• https://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.507.8966&rep=rep1&type=pdf

Study demonstrating the steady increase in quality of life during the Soviet period (including under Stalin). Includes the fact that Soviet life expectancy grew faster than any other nation recorded at the time:

• https://www.jstor.org/stable/2672986?seq=1

A large study using world bank data analyzing the quality of life in Capitalist vs Socialist countries and finds overwhelmingly at similar levels of development with socialism bringing better quality of life:

• https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1646771/pdf/amjph00269-0055.pdf

This study compared capitalist and socialist countries in measures of the physical quality of life (PQL), taking into account the level of economic development.

• https://pubmed.ncbi.nlm.nih.gov/2430906/

This study shows that unprecedented mortality crisis struck Eastern Europe during the 1990s, causing around 7 million excess deaths. The first quantitative analysis of the association between deindustrialization and mortality in Eastern Europe.

• https://academic.oup.com/cje/advance-article/doi/10.1093/cje/beac072/7081084?guestAccessKey=01c8dd9f-af1c-48b3-b271-eb5d3a45017c&login=false

Meanwhile, hilarious for you to mention Cuba and DPRK given that your shithole excuse for a country has done everything possible to choke their trade with the world. Good thing that SWIFT is going the way of the dodo now.