Your premise of personally determining a poster is not behaving according to your interpretations of the emotional norms has been "litigated" on thousands of message boards for 22 years by my count. The time-honored solutions are...
1) Don't read the posts or threads by posters who upset you.
2) Use the block function as desired.
3) Express your disappointment with tone or content of posts by clicking "emojis."
4) Remember, you might be annoying to fellow posters but they practice any combo of 1, 2, and 3 to cope.