I've been noticing (obviously purely anecdotal here), that those in circle of DM's have been including more and more science fiction elements in their otherwise Tolkien/medieval/high fantasy games. I have no issue with it and know the rich tradition of slipping sci-fi in at times, but specifically with my peers who run D&D 5e, they are heavily pursuing science fiction elements in their plotlines - Spelljammer space battles, creating pocket realms of mechanical societies with vanishing mysticism, and the like. I could totally be off-base here, but has anyone else noticed this drift or shift occurring and how do you feel about its increasing prevalence?