In conclusion, central planning ultimately just completely fucks up any economy. Check out Venezuela for a recent example.
So if 100% central planning results in a total catastrophe, then there should be no central planning at all, because any extent of central planning is harmful compared to less (or ultimately none at all).
Our current economic system is remarkably similar to the centrally planned economy the socialist dreamed of creating. Most productive enterprises have no controlling owners - the ownership of most public companies is highly dispersed and much of it in the hands of pension funds, etc. About the only difference between a socialist “paradise" and what we have now is that the indirect ownership of the means of production is not evenly distributed within society.
I don't think your argument works. If I drink a swimming pool full of water, I will die. Does that mean I should drink no water at all?
Any degree of central planning is harmful to us because: 1) it always represents an opportunity cost compared to people making choices themselves, and 2) the choices made by central planners are not made to benefit the masses (because otherwise they'd just let people make the choices themselves)
What would be the point of being in a position to make decisions for other people, if you were just going to do your best to benefit others, instead of yourself?
I suppose, though, that you could at least use sufficiently advanced algorithms to monitor supply levels and inventories and sales to adjust prices so you can bring back some measure of the price-signaling mechanism that central planning has traditionally lacked... if the guy in charge isn't tempted to fiddle with prices for political reasons. Looking at some extant central-planning huggers like Tom Steyer (who wants to investigate/punish/tax oil firms because California regulations make gas more expensive than elsewhere in the nation) you can color me skeptical of the premise.