She claims fealty by right of blood, reigned as the crown of an extraordinarily cruel empire, and frequently interceded in the democratic government of Britain to protect her private interests.
What are the empires you're comparing it against? To call it "extraordinary" makes the claim that its level of cruelty is substantially greater than the "ordinary" cruelty of other examples. Were the Russian, Japanese, Ottoman, and other 19th and early 20th century empires substantially less cruel than the British empire?
Not to mention, as other commenters point out Elizabeth was coronated during a period of decolonization, with India departing the empire less than a decade earlier and most of its colonies in Africa and Asia following suit over the next couple decades.