I do not know what fraction of LLM-processed messages are due to posters not being confident in their written English. To the extent that it is meaningful, we can

a) be welcoming and indicate that we're OK with broken English (content and intent typically do get through), and/or

b) allow posting in languages other than English (does this even work right now?).

Above probably ahead of its time, but thought I'd just make the suggestion.