Much the same as anyone else that's done even simple cursory research.

1. It sets an arbitrarily low population limit which is antithetical to God's command of going forth and multiplying. This obviously poses a problem when speaking of reducing the global population by 80-90%. Chances are the 500,000,000 will all be the degenerate elites' progeny and those they deem "acceptable" as they would be the ones calling the shots in this hypothetical NWO.
2. "Unite humanity with a new living language". Again, this comes off as opposing God's will. We already went through this at the tower of Babel. We have the various languages and nations for a reason.
3. "Let all nations rule internally resolving external disputes in a world court." Ceding your sovereignty to a globalist-run supranational authority. No thanks.
4. :Be not a cancer on the earth – Leave room for nature." More misanthropic Gaia worshipping under the guise of muh humans are a cancer meme.

A lot of this stuff sounds good on paper, like many surface level things Masons/Illuminists say but when you actually understand the implications of what's being said it becomes alarming.There's also the issue of worshipping "reason" like the French revolutionaries did and we all saw how well that turned out. It's the issue with all Utipian endeavors: it tickles the ears with pleasant sounding things but in reality just paves the way to hell. Immanetizing the Eschaton and all of that.