Yandex is one of Kagi's index sources. They used to publish a list of their sources but have changed it to a generic "we use multiple sources" because they got so much shit for using Brave (because of its founder’s bigotry) and Yandex (because of the ethical dilemma of paying a company headquartered in Russia which in the best case pays taxes and in the worst case has Kremlin/military involvement). This has been a contention debate for awoke, you can search their forum and discord for more details.
Based on what? Have you read that somewhere?
Yandex is one of Kagi's index sources. They used to publish a list of their sources but have changed it to a generic "we use multiple sources" because they got so much shit for using Brave (because of its founder’s bigotry) and Yandex (because of the ethical dilemma of paying a company headquartered in Russia which in the best case pays taxes and in the worst case has Kremlin/military involvement). This has been a contention debate for awoke, you can search their forum and discord for more details.