All the deflection in your post yet no infallible proof that the apostles taught about the assumption of Mary and the requirement to believe that.
1. We have Petrine authority to interpret Scripture. You have none.
2. Go read why the Catholic Church believes in the Assumption of Mary and why renowned Catholic theologians and eminent scholars of the Protestant and Episcopalian faiths converted to Catholicism and believe in the Assumption.
3. Go pick up a book by celebrated British essayist Hillaire Belloc on why he explains that unlike other heresies, the evil of Protestantism “spawned a cluster of heresies.”