If non-native speakers (including myself, fwiw) want to post grammatically correct comments, there's a fairly straightforward solution: learn grammar and use a spell/grammar checker. Have the courage to write your own words and the decency to spare the rest of us from slop.
People who depend on LLMs to polish their words will run into the same problem as people who rely on autocomplete functionality: their language skills will suffer.
There's nothing wrong with using tools to check written text, but I'm wary of blindly accepting any suggested fixes. If I see a red underline I'll consider whether the word is actually fine first (English is not a static language, and spelling dictionaries are not complete), and if it looks wrong I'll try fixing it myself before reaching for the suggested fix.
