[AnimalMuppet]

I would rather read a non-native speaker write something hardcore-oldschool than read LLM-generated "You won't believe what my grandmother's cat taught me about..." You may get corrections about your English. You may even get complaints (not everyone on HN is nice all the time). But my impression is that you will get fewer complaints than you will from something that "feels" LLM-generated. (Or maybe that's just my personal taste.)

[bee_rider]

It is considered socially acceptable to just straightforwardly complain about an LLM-written post, while complaints about somebody’s English are usually phrased as constructive feedback. The latter takes more effort and is not as effective as a launching point for a rant, so the former might just be easier to detect based on lines-of-text.