If you are some low level employee, certainly, the liability is too much.
But very higher level employees and Zuck himself? I would have to see actual proof of very secure lockout and segregation policies and procedures with zero exceptions or higher level administration access across the entire company to even have a chance to believe it. And that is way more effort and organizationally burdensome and costly than just trusting a few people to not be morons and be available when needed because you pay them enough money to not blab or give out access to others.
But very higher level employees and Zuck himself? I would have to see actual proof of very secure lockout and segregation policies and procedures with zero exceptions or higher level administration access across the entire company to even have a chance to believe it. And that is way more effort and organizationally burdensome and costly than just trusting a few people to not be morons and be available when needed because you pay them enough money to not blab or give out access to others.