But, he doesn't hang around HN.
He saw his well-educated colleagues reduced to stealing paper-clips. When he visited the US, friends asked him mainly for mascara and condoms: https://youtu.be/1KzaJwEaOwU?t=96
In 47:50 of this video (https://youtu.be/s88pMN3qDRQ?t=2870), he states something extraordinary: the Soviet economy was between 6% and 7% of the US economy when he defected to the US. The US and UK intel. agencies had higher estimates of between 45%-90%.
Extraordinary stories is a hallmark of people who were defecting back in Soviet times. A massive grain of salt won't hurt when digesting them.
If that is indeed an accurate assessment of the situation, then computer-driven planning would not have done one whit to fix it. You can't fix these kinds of institutional problems, without changing the management culture - as anyone who has worked on a 'agile-in-name-only' team could attest to.
Anecdote of the theft: My mother's uncle was some regional agricultural inspector/manager/auditor. Didn't actually do any farm work himself. Every year, around harvest time, he would, for a few weeks would come back from work with a trunk loaded with fresh produce, meat, etc.
Now, consider that, and extrapolate it to the entire country. Yes, things got done, but not as well as they could have. Corruption is a huge tax on the economy.
This is exacerbated in communist countries (like North Korea) that don't provide their people with enough via legit means. If you are hungry, and your standard rations aren't enough, cheating to get enough becomes vital, which encourages more cheating and even less given away freely and the race to the bottom starts.
https://amazon.com/o/asin/B0074HCLPE
It's a novel set as a series of historical vignettes. While it is semi-fictional, it's been widely praised for capturing the initial optimism and the growing absurdity behind the Soviet economy, the people trying to control it and its effects on the citizens in general. It does describe in part the attempt to computerize the economy and how the system was gamed, etc.