Usually these calls are subjective as not everyone has the same assessment of a “rude” message. We’ve had cases when something was flagged as rude, but the OP said they were not offended at all and did not bother. That’s why we have the moderation who look into the report and ultimately decide.
We are and will continue to reach out to users whose posts are being flagged as rude/inappropriate/insensitive/harsh to address what seems like a bigger issue.