The main reason I occasionally venture into google is for news -- "!gn something specific" can return better results if I'm looking for a specific article I recall seeing a couple of weeks ago. That said there's also far more rubbish in the google news source, it's far less useful on the whole than DDG, but occasionally it reveals the right result.
I've generally found what I wanted via the DDG news search, but I haven't used it enough to seriously evaluate its quality, unlike the main search engine. I've also had reasonably good luck with "past week" or "past month" searches on DDG, but those aren't news-specific.
I'm not suggesting that it never happens, but it's certainly not anywhere close to 90%, or even 9%.