Apple TV 4 Siri language

Hey there,
just got my Apple TV 4 64 GB and I found some problem. Although I live in Germany, I prefer my devices set to English. I've always done that and it was never a problem.

For the Apple TV though, I can not use English language and still have Siri activated. The region does not change anything regarding that, I can have the region set to US or Germany and it both works. When I set the language from Germany to English however, it says Siri is not available for English. Same with English (UK), Spanish etc. Only German works for me.

So if I want to use the English UI for Apple TV, it won't let me activate Siri
Anyone else have that problem or could this actually locked intentionally by Apple?!
Thanks a lot!