Drone strikes didn’t take out a Russian bot farm, but we were primed to believe it
(www.motherjones.com)
It is all anecdotes that can be explained by just a placebo effect. Actual bot farms (the kind of bots we're talking about) don't exist on search engine data centres. They're set up in poor countries running on multiple second hand devices using proxies. Bots do exist, but you don't get rid of them by blowing up a data centres used by a privately owned search engine.