“You asked how important was the Assumption of Mary.”
Actually, you wrote: “The assumption of Mary is a major dogma of the Catholic Church...”
And I asked: “It is? According to what scale?”
I never asked how important the Assumption of Mary was. I asked about “The assumption of Mary” being a “major dogma of the Catholic Church.” The Assumption is an event. The dogma of the Assumption is a dogma about the event. They’re not one in the same. Even you must realize that the Bible and the doctrine of the Bible Alone are actually two different things, right?
That the pope spoke ex cathedra on this indicates its importance.