My experience is that DDG still isn't as good as Google historically was, but Google itself has actually gotten worse, to the point that they're now about the same.

The main problem seems to be that Google will no longer surface anything that isn't on a major site, so even when you know that the thing you're looking for exists, it can't find it. Obviously this also implies that it's missing a ton of stuff you didn't know existed but would have wanted to see.