Yes. That’s how it was for my grandparents when they first arrived. Their children learned the language within months, and they translated for the parents for the couple of years it took the parents to catch up.
They sure didn’t expect American taxpayers to translate everything for them into a Yiddish, though.
And your post had exceptions - like can’t learn the language because I’d head injuries. In those rare instances, where there is a legitimate reason for not being able to learn the language, they get translators under American with Disabilities Act. But we have adults here for more than a decade (!) who never learn English, and we make it so they don’t have to: press 2 for Spanish on the phone, press 2 for Spanish at the ATM, etc.
You come to a country whose culture and opportunities you admire….well, then learn the language. If my grandparents and great grandparents could do it, so can Spanish-speaking people.