FFXIV development is mostly random, new jobs and destinations can be anything. WoW is more stable since there is a pre-existing lore with the previous games.
Also, speaking generally, this is just a result of the video fetishism that started with youtube : useless videos about anything and everything are created constantly. Even when some text and pictures would be better, no, it must be a 20 mins video because videos are better (and monetized).