I turn it down straight away for being Russian and I'm suspicious of anyone that mentions it positively.
Russia is in a cold war with democracies in general and a hot war with Ukraine. It has an autocratic dictator as leader and state control of media.
It has a well documented propaganda campaign with the goal of destabilising other countries through agitation. We even know the address of the building in Saint Petersburg it's run from.
Why would anyone try to assess Yandex's results? They could be like a slot machine serving good results 78% of the time and slipping propaganda in when least expected.
Why bother with that when there are good, free alternatives?
Maybe so they can bring actual data to the discussion instead of bias.
Couldn't we say the exact same thing about any US service in this day and age?
Trade war with half the planet, hot war with Iran. Autocratic dictator as leader and complicit media. Well documented propaganda campaign and history of destabilising countries around the world. Known to compel tech companies to spy on foreign citizens...