That's really just the difference between news and articles. News events (big trials, disasters etc) are highly time-sensitive and if your income depends on display ads and Google, instant publishing is crucial and something that comes up on RFPs for such systems. Workflow where content is created by multiple people isn't as well understood but can be a source of incredible friction and productivity killer in publishing.

The argument is sometimes made that this doesn't apply to simple blogging and that SSGs of course aren't aimed at pros, but I can say with some certainty that the segment of bloggers who can and want to publish with Git etc is infinitesimally small and quite possibly 100% represented on HN :) That's fine and great if it works for your use case but it pains me a bit to see people re-discovering the very old and disproven model that SSG represents. It's a) highly niche and b) counter to many current and new requirements in content publishing.

The main argument for it is performance but I don't see how it improves on Varnish - albeit w cache warming - and tellingly edge cases of cache warming are getting replayed in SSG increasing complexity. In fact dynamic systems often forgo cache warming as not worth the result much of the time (and can do it selectively), but you don't get that control at all in an SSG system.