Someone earlier said that DND references itself, I would agree but amend that to suggest that DND references and is inter-textual with the many permutations of itself in video games, literary fantasy, anime and so forth-- a lot of the ideas presented in such works are ready made to work in DND. It also, like some world religions, engages in widespread syncreticism, accepting more or less anything that can be made to fit its milieu and monster-fighting, dungeon crawling core concept.
We have monks that shoot ki blasts like Dragon Ball characters (but kept relatively tame in scale), we've had 4e and 3.5e take a lot of inspiration from anime where blademasters are capable of absurd super human feats, where your half demon friend is a party member. 5e pushed back on a lot of that (not all of it), treating it as part of the reason 4e failed, but then loosened up to add some of it back in afterwards.
Pathfinder has always really embraced that line of thinking, we've got Final Fantasy Summoners and Gunblades, Trigun Unexpected Sharpshooters, Maguses that channel lightning into their sword like its a
Chidori, Multi-action ramp sequences to make spells like Ki Blast or
Horizon Thunder Sphere stronger, Maguses with casual short range teleportation, Kitsune as a playable ancestry with a late game feat that lets you turn into a giant rampaging demon fox, hell Tieflings have a feat called
Final Form which is so self aware that it hurts.
High Magic 'generic' fantasy is a really great environment to be able to pull in beats from a lot of different sources without having to fully commit to the kind of world it originates from, so I think we're essentially seeing authors bring in the beats they like, as WOTC gets less shy about sticking to traditional stuff and less worried about 4e comparisons they'll likely continue to expand in that direction too.
