Because by that time Gnosticism was found in other churches outside of Alexandria -- churches that had swallowed hook, line, and sinker all of those subtle Gnostic doctrines embedded in those corrupt Alexandrian manuscripts that your father Origen was manufacturing. Embrace your heritage -- don't run from it.
Origen is not a Church "Father." That is another Protestant lie. I wonder why they seem to lie so much?
Origen left the Church when he embraced Gnostic heresy and taught the pre-existence of the souls (the same thing taught by Greek paganism, Judaism, some Protestants and definitely by the Mormons).
Yup, in his second half, Origne sure turned weird.