They might mean the often long hours. The "death marches" that have been written about here: https://www.amazon.com/Death-March-Developers-Impossible-1999-06-1

They might mean the often long hours. The "death marches" that have been written about here: https://www.amazon.com/Death-March-Developers-Impossible-1999-06-15/dp/B01FIZ9I4U/ref=sr_1_2?ie=UTF8&qid=1515183545&sr=8-2&keywords=software+death+march https://www.amazon.com/Death-March-Developers-Impossible-199...