I don't use an LLM to edit my text. I don't want to sound like a watered down version of the average internet user until some cutoff date.
Using an LLM to rewrite your text destroys your original writing voice and erases little subtleties. I still check for syntax errors of course, but most of the time by checking online dictionaries and the structure of my text is never altered.
I don't get why people want to sacrifice authenticity for fake proficiency. In the end, if you need to explain your ideas in person you cannot use an LLM and the difference between your published way of speaking and actual way will be very strange to people.
Writing in your own words gives a lot of benefits. It gives the benefit of authenticity. The way you talk in real life is the same as on your site or publications. It gives you also deeper understanding in the material you want to explain, and therefore also better recall.