It’s an interesting question. I suppose we should ask ‘important to whom?’

For people who want to watch the original film but are opposed to acquiring any fan reconstruction or preservation, an official release is absolutely more important to them than Despecialized.

For people who just want to watch the original film regardless of where it comes from, Despecialized is just as important as an official release.

For people who appreciate the work of dedicated fans more than profit-minded studio execs, Despecialized is more important than an official release.