Sure certain sounds can definitely be picked by non-native speakers. I'm not an English or German native speaker, but I've learned to pronounce /x/, /ç/, /θ/, /

Sure certain sounds can definitely be picked by non-native speakers. I'm not an English or German native speaker, but I've learned to pronounce /x/, /ç/, /θ/, /ð/ and the guttural Rs just fine, all sounds I didn't grow up with. It took time, exercise and willpower, and I'm kind of a language nut so I always put in some extra effort to get my pronunciation right. A common person that doesn't know the slightest amount of German is definitely not going to put in the effort to learn how to say [ch] right, just to say "Freidrich".