Elea Chang takes on the “full-stack employee” idea in a great critique called The Full-Stack Employee and The Glorification of Generalization:

Hidden inside that “full-stack employee” manifesto is the idea that tech equals work and work equals life. Despite all the talk of learning and growing, the full-stack employee is primarily focused on conquering domains within the tech industry. But there have always been ways to impact the world outside the workplace. Unfortunately, the continuous pursuit of professional skillsets tends to diminish the boundaries between work and everything else, leaving you with less and less time to actually grow as a human being.

I’m very much in agreement with this. Many companies still go out of their way to reward people who work extra long hours, even if that comes at the expense of time spent with family (or, as Elea points out, volunteering outside of work).