I think basically everyone does that, but DDG doesn't seem to if you use quotes. Google started treating quotes as advisory ~10 years ago.
> And i wonder if the tech they are using implicitly uses google?...
People type "!g" more often than they type "!b", probably. Google likely pays them for this; you saw that leak of how much they're paying Apple to remain the default search engine in Safari and Mobile Safari?
>Google started treating quotes as advisory ~10 years ago. It still treats them literally (use it all the time) but it may mix non exact matches too (usually specifies when they do)
It was 36% of Google's advertising revenue from Safari searches. $18 billion in 2021. In total, Google paid $26.3 billion that year, so Firefox's cut would be $8.3 billion at most.