While in America, the System Says Roosevelt Was an Emperor

Having just transmigrated to another world, I'm in America, but the system insists I'm in the Warhammer universe. Homeless people on the street are called "bottom-nest rats," factory workers toiling day and night are called "bottom-nest laborers," and congressmen are called "aristocrats in the upper-nest spire." I can barely understand the above, but can someone explain to me how Roosevelt's speech on the radio has become the Emperor's teachings? Is it because one sits on a golden toilet and the other in a wheelchair? [Ding~ Listening to the Emperor's Holy Teachings, sanity increased by 99999] President Roosevelt, no, no, Emperor Roosevelt, you are the greatest Emperor! For the Emperor! This book is also known as "Who Says Warhammer 40k Is Bad? This Universe Is Amazing!" and "The New York Bottom-nest Tax Collector's Diary." [No Warhammer knowledge or historical knowledge required, feel free to open this, it won't affect your reading experience...]