Their real life was actually a lot harder. They were seriously devout and Catholic, as I know from contacts, and were not just doing it for show.
Several of the children, after they grew to adulthood and married, went off to be missionaries but there were a couple of of others who had ended up living in New York or nearby. I met one of them once - it may have been Johannes - but I met him in Canada.
Movies always go for the drama and the stereotype, simply because it’s recognizable to audiences that may not know a lot about the topic. So this isn’t a bad thing, but it’s also not history.