It's literally rewriting search queries to avoid showing putin in negative context, when people search for "khuilo" or "bunker grandpa", "main thief" etc.
Not sure I understand what you mean, what "process"?. There shouldn't be any "gotchas" unless you are naive about how public service search engines operate.
https://twitter.com/romankulish/status/1620227618435125248/p... https://meduza.io/feature/2023/01/30/yandeks-blokiroval-izob...