Back in February, NieR: Automata director Yoko Taro announced that he would work alongside producer Yosuke Saito on a new Final Fantasy XIV raid themed after his popular game, titled YoRHa: Dark Apocalypse. That being said, in order to write good content for a game, one needs to be familiar with it.
In order to achieve that familiarity, the prolific developer has started playing Final Fantasy XIV himself and is being his usual adorable goofy self about it, providing regular updates of his newbie days.
Source: N4G PC Yoko Taro Is Playing Final Fantasy XIV While Working on Nier: Automata-Themed Raid