Bacon Bits
Legend
The same way that guns don't. Or clerics. Or elves.I guess I have trouble seeing how mental powers don't fit pretty easily into most fantasy world settings? Telepathy and telekinesis seem like fantasy staples to me.
Most settings aren't kitchen sinks of lore. Many have very strictly defined sources of supernatural power that work in very narrow ways, and introducing lore that just ignores that kind of spoils the tone or upsets the central conceit of the setting.