Please state in which country your phrase tends to be used, what the phrase is, and what it should be.
Example:
In America, recently came across “back-petal”, instead of back-pedal. Also, still hearing “for all intensive purposes” instead of “for all intents and purposes”.
I am viscerally against this concept.
It’s one thing to include the spelling as a way to capture the phonetics of an accent or a dialect, entirely another to accept its use in writing when using a neutral voice.
If anything, because it’s so often just a misspelling I would avoid trying to use it as a phonetics thing just as a matter of style. At this point everybody would think I’m making a mistake instead of trying to mimic a way of speech in a way they’d never do with “coulda”.
With you on all counts.