The Dead are the ancestors. It is believed by many that the knowledge gained by our ancestors is not lost. Through meditation, one can reconnect with the ancestors and relearn those ancient lessons. Even though the ancient druids left little of their ways documented, we can still learn their ways through meditation. All Spiritual Paths are Valid All religions and paths to divinity are valid.
None are better than others.
One must find the path that is most comfortable. Druidry does not believe in conversion. Druidry, at least in the spiritual form, has no dogma. Either one is called to the Druid path or one is not.