>>214210869
because it just was like that, even though formally GDL was ruled by dukes (kings) from a certain dynasty, in practice every new duke had to be accepted by the community of boyars, among whom the vast majority were Ruthenians.
And well, we can assume if this state was to be reintroduced now, they wouldn't be an absolute monarchy but simply a regular democracy where people in Kyiv could elect like let's say a comedy actor to decide about my fate. No, thanks.