Depends on how you use it. If you say "reword this to sound <whatever your goal is>" then it does suck. But if you say "This is what I wrote. My intention is so-and-so. The audience is <audience>... Please mention and add suggestions for how to fix typos, poor wording, unclear expression, etc.

Then you get back what it thinks is wrong and you're in charge of editing in its suggestions. If you let it edit for you you're more likely to just create slop.

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Here's an example. My actual text is:

> I want to make it clear that I'm not hunting for things to be angry at, these are issues I've encountered in actual codebases.

If go through the route of prompting it to re-write, it changes it to:

> I’m not looking for things to be angry about—these are issues I’ve encountered in real codebases.

The em dash is a clear give away that it's AI, but it's also soulless.

If I ask it to tell me what's possibly wrong about it I get that there's a comma splice (never knew the term, I'm not a native speaker) and "about" is better than "at". So I do a minor change:

> I want to make it clear that I'm not hunting for things to be angry about. These are issues I've encountered in actual codebases.