Worldcoin is owned by the CEO of OpenAI, Sam Altman. The idea is very unique but the idea of retina scam draws a lot of controversies. Also the world citizenship was not possible either.

https://time.com/6300522/worldcoin-sam-altman/

I don't think it is a very active project right now. I don't see much traction out there for Worldcoin. I may be wrong though! But I honestly don't think it will come back life ever again from its current state.