This graph shows that Yandex Web crawler farm was hit. The other option, it was shut down to accommodate more critical services that got hit. (I worked for Yandex 20 years ago, one crawler guy was in the same room.) Not sure if troll farms got affected in any way, that is a different business entirely, no overlap.

The interesting aspect is this: Yandex was taken from its owners semi-consensually. Similarly, the original owner of the troll farms was blown up in a business jet. He staged a mutiny cause his dirty bloody business was about to be taken from him non-consensually. Some other large non-consensual takeovers unfold for 5 years, soon 6.

What an appetite!