Google forgets so much, and has a tendency to bias results, while DuckDuckGo is so incompetent at times. Add the walled gardens that can’t be searched unless you are part of them, and we have a worst search experience today than over a decade ago. I am confident that the amount of data that needs to be indexed plays a huge factor too. It just isn’t as easy as it used to be.
Ten years ago, when Google screwed up, you'd land on a really obvious linkfarm page with a bunch of SEO spam: it was literally just a collection of keywords repeated over and over.
Now, when $search-engine screws up, which it often does, you land on a plausible-looking page, with bad but not terrible English, that just... doesn't tell you anything worth knowing. I know the smell of them, and it can still take me a section or two of precious time to figure out what's going on.
There's often not that much link juice, either: as far as I can tell, the business model is purely to put an ad or two in front of my eyeballs.