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?