Yet, if one advances the supreme premise of idealism-- that "behavior" leads to history-- then, the historical figures in question *are* to blame.
An idealist premise of history-- rather than materialist one-- necessitates all "ideas" as subjective products of individuals, independent from the objective forces that motivate them. (i.e. the bourgeois claptrap about the "power of ideas.") Thus in this context "ideas" are no different from "morals", the "worst" of which both are abstractly imposed from above and without by eccentric egotists.
Best, David