Fantasy vs. Science Fiction

In general, science fiction has one characteristic: it embodies a materialistic point of view, where everything must have an explanation. And conversations about "destiny," "the chosen one," or any fatalism – I believe all of this calls into question whether a work belongs to the science fiction genre.

I perceive all these conversations as mythology. Simply. An abstract belief in miracles exists and will always exist. In the world of science fiction, this belief is transferred to the world of starships and lightsabers. The meaning remains the same. Why deprive the world of the right to create myths on the grounds that it supposedly "contradicts the materialistic view of the world"? After all, the developers of this very materialism were very religious people, possessed quite unattainable ideals, and had an unwavering belief in the future that "will appreciate their work," "justify the efforts expended." Marxists considered themselves chosen to spread the word about the ideal state. Humanists considered themselves chosen to spread the word about the beautiful and rational human being. The Enlightenment thinkers predicted a world full of personal freedom and lived for the future. Why shouldn't this exist in the world of Star Wars? How is the belief in the destiny of the "Nordic race" worse than the belief in "Luke, the savior from the Sith"?