I just want clean, easy-to-read content and I don't care about the person who wrote it. A tool like Grammarly is the difference between readable and unreadable (or understandable and understandable) for many people.
You could even write a plugin for your favorite web browser to do that to every site you visit.
It seems hard to achieve the inverse that is (would you rather I use i.e.?) rewrite this paragraph as the original author did before they had an AI re--write it to make it clean, (--do you like oxford commas, and em/en dashes! Just prompt your AI) and easier to read
I personally don't see a problem with someone using a grammar checker as long as they aren't just blindly accepting its suggestions. That said, if someone actually is using it in that way, it shouldn't be detectable anyway, so it probably doesn't matter all that much whether or not it's included in the letter of the rule.
But that creates a private version of the text which the original poster didn't sign off on. You could have fixed something contrary to their intent.
For those coming from a language other than English, you are more likely to lose information by using a tool to “reconstruct” meaning from poorly phrased English as an input, as opposed to the poster using a tool to generate meaningful English from their (presumably) well-written native language.