Well, IMO there is something else in there...it's not really like them, whose used to post here even if just to say someone farted at SE office, stay over a month silent...in special being the first month after billing start.

Also, another point is that the last 2 info we got actually were related to Yoshida's health, not the game...seeing the situation the game is right now, it would be a best time to step back due health issues..."force majeure" happens.

You see...in the current scenario, if he leave now he's already well known (he was a "no one" when he took over), if the FFXIV succeed it will automatically be because of the changes he started (regardless of what the person who take his place do) and if FFXIV fail it would automatically be because of the dude who took over his place (again, regardless of what the person who take his place do)...so it's a win-win scenario for him actually stepping back due health issues in the next months (of course...it would be something that require many more health updates, being a situation worth of another ~2 months).

So, in short, i wouldn't be surprised if he step back somewhere in the next 1-3 months due health issues since it's the perfect period to leave with a reputation intact regardless of what happen to FFXIV at 2.0 on. Who knows...Yoshida always were at DQ games, not FF...maybe they just wanted to build some fame here before moving him back to DQ since FF was always way more famous than DQ at occident, luring some of those FF fans who liked his work here to look foward to his next projects there too.