If AGI is actually attainable, then, sure, planned economies will be more performant than market economies, especially for high value industrial captal equipment. No need for Gosplan to decide on your candy bars and craft breweries.

Not to speak for the other poster but I didn't see any implication of a central benevolent dictator in their comment.

If I run around town smashing windows with a rock, GDP goes up. Computing value more accurately than financial markets is not difficult: the bar is on the floor.