I post reminders in my room such as "Don't take the bait" or "Be the adult" or "Argue with the disturbed? That is a fool's errand". "Avoid interaction". "Leave first".

I feel like I can relate to much of what you stated. Sometimes I will get perturbed, get annoyed with someone when in my mind, it seems they are taking the discussion off into the wrong direction or maybe grandstanding a bit or they are missing the point of the topic at hand. Or maybe I feel this person has little ability to comment on said subject. All the while, the tension within me can continue to snowball which can make me feel more conflicted and more uncomfortable. I may begin to contemplate if I should make an effort to clarify and suggest a course correction. It can be a difficult situation as uncomfortable feelings can escalate and it can taint the overall ambience of all in the room.
I suppose it boils down to how balanced and supple
one's ability is to navigate and mesh with others while knowing that everyone's level of civility is different.

In the end, if the uncomfortable feelings continued, I would probably seek out another meeting.

I believe that at times, this choice could be a sign of weakness but at other times it could be perceived as a strength, or as a wise decision, or a choice that evolved from experience.