Doshirak is the messenger of the dark brother of the Flying Pasta Monster. They should be feared. The messengers of the Almighty are ordinary pasta, and spaghetti are his brightest angels.
Pastafarianism certainly exists - no one doubts this, except for individual subjective agnostics who do not believe in the existence of anything outside of them. You probably wanted to ask if the FSM exists. And doshirak is just a cheap but acceptable replacement for "Ramen". Acceptable due to the unobtrusiveness of the indicated religion.