On the one hand, is this surprising? Once you get as big as FB, it is inevitable that it is no longer the same kind of work environment as it was when it was a hot startup or a new titan. FB is not new. It is no doubt changing on account of that, because the way the world reacts to it is changing. They wanted to start their own currency, which many startups do, but because they were FB, the governments of the world made it clear they would not be allowed to succeed in that. When you are big, you cannot "move fast and break things" without triggering a much larger backlash from the world around you, and this inevitably means you don't move as fast.
On the other hand, I don't doubt that they are going to have to worry more about work-life balance and things like that, because they cannot just use their status as the new titan to recruit with (because they're no longer new). So, like many no-longer-new tech titans before them, they will have to change how they recruit and retain. FB is now more like Microsoft, IBM, or Intel than it is like the FB of old.
On the other hand, I don't doubt that they are going to have to worry more about work-life balance and things like that, because they cannot just use their status as the new titan to recruit with (because they're no longer new). So, like many no-longer-new tech titans before them, they will have to change how they recruit and retain. FB is now more like Microsoft, IBM, or Intel than it is like the FB of old.