There's so many angsty takes in this thread, I'm actually pretty shocked.

Working "hard" is an investment in yourself. You don't always have to be soley running on the SCRUM treadmill - you can learn other things that are valuable to the business. Ideally you'll also be smart and chose wisely for things that set you up better career-wise too.

But the idea that one would treat their employer as some kind of chump that deserves the minimal possible output they can extract from you? That sounds like a great way to pigeonhole yourself into a lacklustre and short career. Not to mention a really unfulfilling life. You spend so much time at work, why not try to find work you enjoy for an employer that isn't crap? I get that many jobs are soulless - but we're still in the drivers seat and we typically have a lot of choices (especially these days).