That is not correct. I lived under the boot of the Communist dictatorship and I believe I know what I am talking about.
By far the greatest crime of the Communists was the perversion of the spirit of the people and not the destruction of the economy or the oppression and even murder of random people no matter how horrific that was. No, with a healthy population, a country can quickly rebound, both economically and demographically and the scars of the past can be slowly forgotten. But with a population whose healthy instincts have been systematically destroyed and perverted, the recovery becomes much harder or even impossible.
You may be already wondering what the Hell am I rambling about here. Well, I'll explain. The catastrophic Communist rule changed the very mentality of the people. They encouraged and promoted continuously, during two generations, everything that is bad and counter-productive: lies, theft, lazyness, corruption, profiteering, turning other people in to the political police, waiting to receive everything from the government instead of trying to achieve something with one's own forces, etc. It was a demonic regime which turned many people into its own liking, making them unable to be productive citizens of a normal country. And we are still suffering the ill effects of that disaster today, thirty years after our liberation. If the liberation were to come earlier, the proportion of normal people, not affected by the disease promoted by the regime, would have been much larger.