There's also the very well known inverse phenomenon of absolutely non-google people trying to disguise their crawler as a googlebot useragent, which has been a thing since at least... 15 years now?

If official yandex bots ain't included in this data here - then it means spam/scam bots come indeed from yandex servers. As they stopped working, when the yandex data center was hit.

I know what it means in general, but like I said indeed not "how is it specifically defined for the metric provided in that page."

I keep thinking about them often, what a definition of cancer on modern humanity that country is. Not all people inside, far from it, but that country - absolutely, definitely and consistently.

And most of those inside allowed this to happen over decades since even harsh dictatorships represent underlying population in many ways, many even cheered / still cheer on direction their country has taken, and non-trivial amount also like raiding neighbors for the kill, loot and money in general.

A stark warning to US if you keep letting things slide to evil direction, this is roughly how you end up over time.