I suspect people who were around for the dotcom bubble, or who have worked on consumer software back when it had gold master dates, don't read it as an exaggeration. I did not, and know several people who worked non-stop 30-60 hour shifts for various reasons.

In my case one had genuine clinical manic episodes and was open about his mental illness; another seriously burnt out; older friends in the games industry spoke of multi-month post-launch vacations (back in the late 90s) to cool off.