The most oppressive regimes have "Democratic" or "People's" in the official name of their country.

Someone took inspiration from this.

They changed their minds and didn't change the name. That's all.

If that's the case the name should come with an asterisk and footnote. Keeping "Open" in the name is not genuine. Its would be like a superhero group called themselves "Hero Squad" and decided being superheros is not profitable as villainy, but still calling themselves Hero Squad despite the obvious operational changes.