https://hn.algolia.com/?query=term%20limit&dateRange=all&typ...
In this case there are a lot of them:
https://news.ycombinator.com/item?id=16457998
https://news.ycombinator.com/item?id=16465426
And the issue of title leads to something of an answer: China is (used to be) run more by committee than a single leader with cult-of-personality authority. This is reflected in the official title: General Secretary of the Communist Party (who is also the President, but that role used to be mostly ceremonial). That, plus a healthy dose of racism, is why you’ll find it hard to name any two former Chinese politicians by name (cue “Who?” Joke).
That system probably remained stable in much the same way western democracies remain stable: there were certain rules that, by custom, convenience, or well-engineered competition between centers of power happened to remain mostly respected. Even among undemokratic governments, there are huge differences in how they actually work. China (and also the Sowjet Union after Stalin) have/had something not entirely unlike a resemblance of rule-of-law with regards to the political process within each country’s communist parties.
And as far as I can tell, the answer is that the party leadership was sufficiently spooked by the craziness of Mao and the chaos of the Cultural Revolution that they decided to spread out power rather than vesting it entirely in a single person.
And I think the term "cult of personality" was invented specifically for Mao as Stalin's spiritual successor.
https://en.m.wikipedia.org/wiki/Supreme_leader
"Supreme Leader" isn't a term specific to North Korea. It's a loose term denoting the one who has the most power. There's no need to be rude.
Lots of previous explanation at https://hn.algolia.com/?sort=byDate&dateRange=all&type=comme... if anyone wants it.
The inefficiency of democracy is supposed to combat the brittleness and power-corrupts-ness of philosopher kings.