When one interprets grammar rules as prescriptive rather than descriptive, it is easy to fall into the trap of believing in "correct" and "incorrect", when expressing intent is the single most important thing. Expressing intent is not a thing AI can do, thus far, as they don't want anything...there is no intention.
I'm certain there are folks out there who have a hard time with written English that could benefit from an AI editor, but I would almost always rather read casual English written by a human, even if idiosyncratic and "incorrect" sometimes.
And, to be clear: Hard to read English can never be correct, no matter how carefully it follows grammatical rules, and AI often writes hard to read English.
I'm certain there are folks out there who have a hard time with written English that could benefit from an AI editor, but I would almost always rather read casual English written by a human, even if idiosyncratic and "incorrect" sometimes.
And, to be clear: Hard to read English can never be correct, no matter how carefully it follows grammatical rules, and AI often writes hard to read English.