Yugoslavia also had severe political repression, with peace between the provinces only maintained by a (near) dictator with a cult of personality. Their economy and standard of living was mediocre at best, and only even possible within a limited geopolitical context where they sat between competing superpowers. It wouldn't be possible to create something like Yugoslavia today. Stupid to even try.
I'd argue the repression of reactionaries was part of the secret sauce that made it work so well. We saw what happened when they were loosened in the 90s.
I'd posit that the rise of the Nazis (which caused the rise of the SFR Yugoslavia as a resistance movement) taught us differently.
Karl Popper, himself an Austrian that saw the rise of the Nazis and had to live in exile as a result famously formulated it as the paradox of tolerance.
In Yugoslavia you couldn't even get bananas or coffee or jeans. People had to go to Italy or Austria to buy it. You had to wait more than a year to get a car. Of course then there was no gas for it. Inflation ate your paycheck before you could spend it.
Because it was destroyed by right-wing extremists in the 90s, funded by Western capitalists that were scared it would show the world a viable alternative on how to run an economy
I really like what you wrote, because it demonstrates what kids in Yugoslavia were thought from a young age. There was this idea of a foreign enemy that it there to get them and any economic and political fault in the country was because of the sabotage of this invisible foreign enemy.
I'm kind of tired of being an economic powerhouse where most people live in misery.