To put it simple — yandex is known for taking its part in hybrid war against Ukraine, for collecting personal data of local citizens, for manipulating search results to prioritize anti-Ukrainian and anti-Western online content to “manipulate the collective and individual conscious of Ukrainian citizens” etc, thus company (and access to its services) is baneed here in Ukraine. Here are some reads on the matter:
https://jamestown.org/program/yandex-tool-russian-disinformation-cyber-operations-ukraine/
https://www.rferl.org/a/ukraine-yandex-sbu-raids/28516331.html
https://informnapalm.org/en/hybrid-wars-yandex-s-hidden-threat-infographic/
