> Majority of California based companies employee English only or English and Spanish speakers possibly with some Indian language as well [...] Never mind rarer languages like Czech or Greek.

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...