I am not questioning actors' ability to learn other languages. What I wonder about is the insistence that the person get the accent(s) right. Pronunciation no doubt is affected by accent but surely there is a level of competence that most people don't reach. I have often read remarks about Meryl Streep's facility with accents in foreign languages.   I'm sure that is true of many others but I do think it is uncommon..

The German word "ich" is on point. Growing up with the language I pronounce it correctly (and marvel at some educated people's inability to hear and perform the action - how many Mudcatters think it of importance?)

I took a couple of courses in linguistics some years back. The professor said that, like most people, he had the ability to detect what region of the world a person learned the language s/he spoke but that some persons are able to narrow it down to sections of cities. He also said that after age 12 most people will always bear a hint of their original language in any language they subsequently learn.

As I said I pronounce German correctly- but my accent is atrocious. Were I making a film or even a recording I imagine knowledgeable people would have a "hissy fit". .