Of course only discarding and “forbidding” lol , after they had the pleasure of reading them; and they are worth reading.
Not sure your points, but neither unlike the Gnostic texts, neither Jubilees nor Enoch were condemned by the Church Fathers; they were simply not included in canons of books which must be defended. In fact, you happen to have chosen two of the books Jesus references as scripture.
I’ve glossed over them. They generally take the low view of Christ. ie that he is fully man but not fully God. nor do the texts sound all that God inspired —meaning inspired by the spirit of truth— rather they sound like fables.
The arian heresy (that is that Jesus was just a man—though a righteous man) was first banned by the council of Nicea in 325 AD. In recent centuries it goes back to Servitus who was burned at the stake by Calvin in switzeraland. The heresy was popularized in the 19th century in the USA because of its elite status at the major universities—because Issac Newton was a unitarian and took the low view of Christ. The attitude of many educated Anglo-Saxons was that if Issac Newton —the master—took the low view—then hey, the low view must be true...—that might be why Herman Melville began his novel Moby Dick with the words “ Call Me Ishmael.” After he finished the novel he began attending a unitarian church. In upstate New York at nearly the same time, Joseph Smith began his journey west. Mormonism also took a low view of Christ—but they put him in the status of an angel.
Some of the stories in gnostic gospels look like they were adopted by Muhhamed and used in the Koran.