Yandex is a search engine like Google is a search engine. Both are also cloud vendors. The chart of traffic from Yandex is showing that the majority of traffic was considered bot traffic, and after Ukraine's attack on its datacenter(s), that traffic has reduced substantially.

It looks like the majority of online bot traffic is coming from cloud vendor networks, which isn't surprising to me. But it makes me think that the "bot share by location" chart is more useful as a "which cloud vendor has bad bot control" chart vs. a "where is bot traffic coming from" chart.