Erik Singer may just be a linguistic national treasure

The ins and outs of how to linguistically reproduce the sounds of native speakers is beyond me. This is why I do not and probably will not ever teach phonetics.

Misunderstandings in communication

I think what many situations like this show, is not how the speaker mispronouncing the words is unable to speak properly in the target language, but rather how the listener is unable to understand and thus shows their lack of international exposure.