that’s their slogan. was pulled from alt text.

do they feed off of other engines, index things themselves

i don’t know. it seems that the search results are a bit different or at least reordered.
it makes sense that smaller companies feed off of bigger ones. i wouldn’t be surprised if they did this. this assumes that big companies have found the best results. this is a big assumption… even fundamentally flawed on the idea that a best could exist. maybe a best for the majority of the population. but there is no such thing as one objective best.