Because;
1) Soren / Hofstadter's Tortoise / Deimos expressed alt-right sentiments and beliefs, believing people are incompatible with the west based on ancestry, at various points expressing support for Trump, and peddling anti-Islam fearmongering. He is in no way shape or form someone who should hold any position of authority even with his lack of presence.
2) Radiation became a hardcore Trump Supporter, at one point saying she believed Mexicans were taking what should be "white peoples' jobs", and saying she liked the messages of alt-right talking heads. She tried to lead some form of brigading here from another website.