If Jason says there is crunch while this developer says there isn't, it'll just look like different people have different opinions on the work environment BUT it'll be hard to prove that there is a massive, deeply engrained issue with crunch at 343i when you have a dev putting his name on the line confirming there is no crunch, whereas Jason's article will only have comments one way or the other from anonymous sources, most likely.
Hate to say it but I'd trust Jason's article over a single dev rushing to clarify his statements after it caused a whirlwind.
Also crunch is rarely forced and even if someone wants to work longer hours it's up to the job to put in safety protocols to prevent that.