Good to see this. But don't see any problem in setting it to US English and using it. Anyway expecting formal rollout in other languages and other parts of the world in 2025.
It's not about the language. Obviously a language that isn't supported couldn't be geo blocked. Apple Intelligence in English (US, Ireland or whatever) is still geo blocked in the EU. For example it says "not available in your country or region" in the Playground app. The app is there but it can not be used.
Wow, I miss a few days on MacRumors, I start on the home page and work backwards, and find all the software release info on the second page! Happy days indeed!