I wonder how much of the advantages from kagi are due to their yandex backend. For example, I recently tried to search for a text string from ao3 and google, b

I wonder how much of the advantages from kagi are due to their yandex backend. For example, I recently tried to search for a text string from ao3 and google, bing, brave, qwant, ... all return no results, while yandex and by extension kagi found it in the first search result.