[delusional]

That's an odd take to me. I don't know about Carmack, but what makes you think JBlow want's people to code crazy hours? From what i hear from him he's mostly angry about the waste that goes on in "enterprises" and the focus on complex niche features over getting shit done.

[killtimeatwork]

You don't track his Twitter closely enough then :) He was explicitly angry at people who say that it's impossible to be productive in coding for more than 30-40 hours a week. He felt that it's ingraining low expectations in young people, some of which have a potential to work really hard and do and do great things.