Thanks for the explanation, I am not a native English speaker. According to https://en.wiktionary.org/wiki/nitpick, the literal meaning is exactly what I meant: I was doing a small correction without much importance. I did not know it was negatively connoted.

How negative it's interpreted is likely related to view relevant it is and how much it detracts from the discussion. If that nitpick was a rider on a salient point, I doubt people would have downvoted.

That's why I wanted to keep it short, but still commented: it's a typo that is quite disturbing to the reader, especially non-native English speakers.