Yes, I can confirm this! I'm using a German version of Windows 10 and Voice Control works fine.
I can add that after I switched back to German I had to set the speech recognition language back to English US. Thats how you do this in your German OS:
Get into your windows start menu and type in: "Sprache und Tastaturoptionen ändern"
You should see your two installed languages
Go on the left side onto "Sprachein-/ausgabe" and select the Spracherkennungssprache to "Englisch (Vereinigte Staaten)"
Hope this denglish tutorial helped you
Regards
