Of course it’s more important. The best official release is (arguably) the GOUT. In spite of twenty years of fruitless rumors to the contrary, this is unlikely to change within our lifetimes.
Despecialized preserves the original films better than the GOUT did, therefore it’s more important than the GOUT. Despecialized is also not a figment of our imagination, therefore it’s more important than the Disney release rumor of the week.