Fantasia being a shady potion that costs a fortune and only a handful of people know about doesn't require that much of an explanation? And ability telegraphs being "read your opponent's body language to anticipate their attacks" as seen in the Hall of the Novice since Heavensward isn't really much of a gripe?
But Brightamethyst has the right of it. Sidequests take place in the expansion they were created for. You're just reading a book out of order.
