Since it's easy to confuse, it's worth explicitly highlighting the benefits of, above all, ultimately, maintaining a healthy work-life balance.

You and the author, together, are correct.

Someone may achieve 'balance' at 30, 60, 80 hours a week. YMMV. But the operative phrase is 'balance'.

I also consider the phrases 'unnecessary' and 'signaling problem' far too light to describe the ill effects of '[glorifying] getting no sleep and eating like shit'. It is a fucking cancer.

As an industry and a niche, we're really bad at promoting this.