Why is giving up all your other interests aside from your work a prerequisite for a "remotely interesting tech scene"? Surely you too see why people whould find

Why is giving up all your other interests aside from your work a prerequisite for a "remotely interesting tech scene"? Surely you too see why people whould find that a slightly strange mentality? I see why the two or three people CEO'ing a startup invest their free time, but it feels like you're advocating a culture where they can force that way of life onto all of their employees and calling it "good for startups". Well, it is, but so is slavery ;)