I don’t use such terms, but I’ll try a possible explanation: There is indeed a certain tendency. Articles are mostly written by speakers of that language. For example English articles by English-spreading editors tend to be influenced by western ideology. If you’d look at, I dunno, Russian Wikipedia, I’d assume it’s a similar situation.

It’s known that there are indeed paid government agents editing Wikipedia. But even those that are not are influenced by the Zeitgeist, which itself is informed by state propaganda. So we don’t need to assume intentional malice.

Ideally, people complaining about Wikipedia would have the time and skill to improve it. But that’s easier said than done.