I always say to them PLEASE don't worry about grammar or anything - it's your stories we want.

Some of the best writers out there don't care about the grammar or such. Think about Mark Twain. It's the story inside that makes it the foundation of modern American literature.

Also, think about back in the day people were literally grammar Nazi on the internet and some of us learned the hard way. These days, just use AI and we'll easily avoid them. I doubt even people these days compelled to be a grammar Nazi anymore.