That may be generally true, in this case Apple actually has an engineering team in Czechia that works on biometrics and authentication:
https://zpravy.aktualne.cz/ekonomika/apple-posili-v-praze-ty...
https://jobs.apple.com/en-gb/details/200636301-2611/software...
OTOH, if an American will whine enough on Internet, they may fix it for him. Maybe some other American should use standard Czech quotes as password to get it fixed also.
Alexa has an experimental bilingual mode but it's nerfed by its general failure to understand well.
Only thing I can think of is some features being available later in danish compared to the English release like the swipe keyboard in iOS.
Language support is still such an enigma.
I'm so over VLC.