So:
1) The Catholic Church is a cult because it teaches that all non-Catholics are damned.
2) Your version of Christianity (which you have not named, AFAIK) teaches that, because Catholics don’t accept your version of Christianity, they are all damned. That makes your version of Christianity a “cult,” doesn’t it?
BTW: You haven’t answered my question: If a person is a seeker of truth, why would he invent, or repeat (as you did), a fake quotation from Pope Paul VI? Is not the normal term for a person who bases his arguments on fake quotations “a liar”?