Trust your own style, even if you aren't a native English speaker. Here's an example where a non-native speaker used an LLM to polish his post. The general consensus was that his own writing was preferable to the LLM's edited version.

https://news.ycombinator.com/item?id=45591707

For dyslexia, use a spell-checker. For grammar, use a basic grammar checker, like the kind of grammar checker that has come with MS word since the 1990s. But don't let a style-checker or an LLM rob you of your own voice.