It gives the impression that it can build multi-decade or multi-generation projects, but in reality it only works for vanity projects that are at the epicenter

It gives the impression that it can build multi-decade or multi-generation projects, but in reality it only works for vanity projects that are at the epicenter of the leader (and key players) as long as it is perceived as valuable to them. It also tends to have a strong upstart, only to slow down and crawl to a point lower than democracies when looking at it in the longer span of time. Democracies and its derivatives tend to create a smaller varience between the ups and downs when it stabilizes while dictatorships tend to oscilate (read volatile) more, in part due to internal struggles.