I think you hit on it, but the total reason why is slightly different, and the key is in its trigger of your disgust mechanism:
Conflict does not need philosophical reinforcement because it is a major biological default. Using our higher abilities to reinforce these prerequisite (but not higher/good) positions triggers disgust because it leads to traumatic outcomes. That is why disgust exists: to cause us to avoid actions that lead to traumatic outcomes. Sometimes the arm of perception of our disgust reaction reaches further than our comprehension.
I think cooperation is, by far, the most ordinary case. Oppressive, normative, cooperation. This may not seems so online, which is a very unusual environment -- but the vast majority of people are conflict-avoidant.
You might say a war is conflict, but not really: the main mechanisms of war are cooperation.
Very rarely are interpersonal situations prone to disagreement.
The disgust here isn't about trauma, it's a healthy narcissm: the guy doesn't want to be deceived and thinks i'm being deceptive.
I don't think I'm being deceptive, because my heart is on my sleeve -- if I were being deceptive, I'd present an apparently objective analysis and give away little of my apparent feelings on the matter (cf. seemingly all mainstream news today).
I have a different ethic of transparency -- I want people to be emotionally and intellectually transparent. Pretending not to feel one way about an issue represses itself in a manupulated intellectual presentation of the matter -- the reader becomes mystified by the apparent disinterest of the speaker.
If there's one thing I hate with a great passion its false dispassion and intellectual manipulation. So I opt for emotional honesty as part of the package.
I think your statement was compatible-with/implicit-in mine: that conflict, being fundamental in some regimes (as is cooperation) but also high-friction, does not need philosophical reinforcement. If it is philosophical then it is reasoned, and reasoned, whether deceptively so or not, is higher function submitting to reinforcing older, lower.
I don’t disagree it is better to be emotionally transparent in many cases, but there are many cases where it isn’t, and where personal emotional responses can be counterproductive and/or misleading, producing their own sets of suboptimal outcomes.
Conflict does not need philosophical reinforcement because it is a major biological default. Using our higher abilities to reinforce these prerequisite (but not higher/good) positions triggers disgust because it leads to traumatic outcomes. That is why disgust exists: to cause us to avoid actions that lead to traumatic outcomes. Sometimes the arm of perception of our disgust reaction reaches further than our comprehension.