If so, it was coincidence. Forgive the copy/paste as I wrote about this elsewhere:
They did not attack the “shitposting datacenters”. The Russian troll/misinformation farms use western VPNs and pirated residential accounts to blend in. If they used Yandex Cloud, it would be easy for websites to filter them and deny them access.
What stopped is the “bots” that index pages, like how Google indexes pages. The Yandex bots that index pages have gone offline because those are the bots that were running in the Yandex cloud / datacenters.