Isn't this common on HN? People with subjective opinions voice their subjective opinions confidently. People who disagree calmly state they disagree and also state why.

The question is more about why my post triggered you... why would my simple opinion trigger you? Does disagreement trigger you? If I said something that is obviously untrue that you disagreed with, for example: "The world is flat." Would this trigger you? I don't think it would. So why was my post different?

Maybe this is more of a question you should ask yourself.