It’s basic Islam 101
They are simply Muslim fundamentalists believing in the fundamentals of Islam. The journalist labels their views as extreme, but their views are not extreme within mainstream Islam, saying so would land you the title of blasphemer, for these are the exact same views promoted by the founder of their ideology.
NOTE: Remember, the jihad is solely for the imposition of the sharia, which effects Muslims and non-Muslims alike.
H/T & upload: Vlad