I think the key is whether the person learns by phonetics (young age, first language) vs by text (older, not first language).
Then the more studious originally-phonetics-learners can supplement their understanding with text later in life and overcome errors like the one in the OP.
That is a decent way of finding out whether the person is a native English speaker, actually.
This rarely happens to non-native speakers.
I think the key is whether the person learns by phonetics (young age, first language) vs by text (older, not first language).
Then the more studious originally-phonetics-learners can supplement their understanding with text later in life and overcome errors like the one in the OP.
That’s a good explanation, always wondered how native speakers could fuck that up.
This is my experience. Usually native speakers who are either stupid or don’t give a shit