Just goes to show how journalists (either the journalists described, or just the NYT author here) are charmed by the mystique of the CMS. I don't care if Chorus is made in Angular 5.0 [1], the robustness of a CMS is not one that makes much difference to the content producers, particularly writing-focused reporters...And the parts that need to be really nice UI/UX (such as slideshow/gallery/quiz creators) aren't necessarily intrinsic to a CMS. A CMS makes a huge deal in ease of publishing...but for most writers, they don't see much difference other than the rich-text editor. It's certainly at the far bottom of reasons to join an organization as a reporter.
[1] it's Rails 3.x IIRC, but perhaps Chorus also encompasses their suite of static publishing tools such as Middleman:
http://product.voxmedia.com/2014/5/29/5759244/vox-media-ruby...
https://source.opennews.org/en-US/learning/evolution-news-ap...