I disagree with this. How many people do you know that have been speaking English for years but still miss articles ('a', 'the')? It is still very easy to understand these people. We could say the same about tones, diction, and accents. Plenty of people that don't sound native can easily be understood. You'd actually be surprised how much you can butcher a language and still be able to communicate (this is really helpful to language learners!). There's so much fuzziness here that it I haven't seen any compiler (plugin, shell, etc) anywhere near this level of fuzziness.
Tldr: Compilers you need to be fairly precise, natural languages you barely need to be in the ball park.
The important part for the fuzzy understanding is shared context. This is what lets humans who have no languages in common communicate basic things in ad-hoc sign language bits as well.
And if the context fails, things can go just as badly as with computers, in the short run. In the longer run, people notice that something went wrong and are likely to go back to an earlier point and try to clarify, whereas computer systems are not great at it.
Tldr: Compilers you need to be fairly precise, natural languages you barely need to be in the ball park.