@SoloSera
@firosahoge
Something worth nothing is that democracy only really works when you separate political, military, and economic power, while eliminating personal loyalty as a factor in political decisions as much as possible. Most failure points in modern democracy or republics (representational democracy) arise because somebody manages to turn their economic power into political power (regulatory capture and oligarchies), uses personal loyalty and military might to obtain political power (a coup), or combines military and economic power to pressure the political establishment (a military-industrial complex, as one US president put it).
Going from a feudal system based on personal loyalty/fealty, landholding, and military strength of the feudal lords straight to democracy is a fool's errand, because family/personal ties, the consolidation of wealth and political/military power together under specific people, etc., which are what that system runs on, will wreck your fledgling democracy or republic.
Consolidation under a strong central government usually breaks the power of the nobility by splitting their political, military, and economic power pretty hard, while breaking the bonds of feudal loyalty. The MC kind of mentioned this:
Put tax collection under officials answering to the central government alone, while permitting non-landowners enclosure of common land (so they're no longer paying rent to the local landlord for usage of the common land - but instead working it and paying taxes to the central state), and you break the nobility's economic power. (This is similar to what happened in England, although that partitioning had its own problems.)
Transition to a professional and meritocratic military, instead of one based on hereditary nobles leading their retinues of knights and what peasants they can muster, and you break the military power of the nobility. (Again, this is
exactly what happened in many European countries, which is why the MC brings it up a bit. You also need that national tax money to pull it off.)
Those steps, which can generally only be accomplished by a very powerful absolutist monarch/emperor are necessary to set the stage for the third act of transitioning from a feudal system to a democracy or representative republic: breaking the nobility's political power by giving suffrage to non-nobles (and, if you want to be extreme about it, non-landowners).
Generally, this whole process happens over the span of hundreds of years and involves a lot of bloodshed, but the MC's idea that centralization is the next step in this particular situation is on the money.