I'm not even sure what your point is in starting this thread, anymore. It's an internet forum. We try to stay on topic and post our opinions politely. Mostly that happens.
Sometimes people get so caught up passionately defending their opinions, they may forget to be polite. When that happens, there are ways of dealing with it: you can choose to post a gentle reminder, or you can report to mods.
I can, off the top of my head, think of 4 threads in the past week or so where the OP was told she was over-reacting. Two were pretty much unanimous that this was so, one was split about 50%, and the other was about 90% for 'over-reacting'. In none of these threads did I notice any egregious rudeness (tho it's possible I missed something).
But the point is there is absolutely nothing wrong with saying, "I don't see it that way, I think you are over-reacting", even if the poster doesn't go onto explain for 4 paragraphs why they feel this way. And even if that poster is the only one on a 12 page thread to say it. Sure, you can then look at the post and think, feel, or even say, "IMO, that wasn't very usefull advice", but there is still nothing wrong with someone stating that "IMO, this isn't rude, or my hill to die on."
In fact, I'm going to say it now, about this whole thread: I don't see it that way, I think you are over-reacting.
ETA: 8 new posts while I was typing. Totally podding Scuba Dog.