Crunch is always blamable on higher ups.
It's down to scope, management, features, and over-promising crap to the developers.
You should know your team's ability and promise honest deadlines. Not meeting those deadlines is 100% on the producers ability. That's literally their job. That's it.
When games end up in crunch, it's because deadlines are closer than anticipated, or the publisher is asking for asinine shit at the last minute and the producer didn't stand up for the developer.
Crunch inevitably happens on any project, but some studios thrive on it. Some very big famous studios, which I have people TOLD ME in person "I'd rather be homeless than work for them" even though it'd look great on their resume.
It's not good and not something to boast about. The fact that this account chose not only to ADMIT there's crunch, on the order of a full year, but as a fact of pride, is nasty.
Those people, those programmers, those artists, those QA people, don't get to see their family. And this twitter jockey is making light of that. FUCK THAT.
Before you go thinking this isn't a big deal, look at the accounts responding to this. These are the people making your games that are most upset. Unless you've dealt with crunch, you have no idea what this means.