I wrote what my point was in my original reply: that if you have unrealistic expectations of what is possible, you will attribute problems to malevolent intent rather than complexity, tradeoffs, etc. etc..

You stated an unrealistic expectation, and I explained why it was deeply unrealistic as an ideal. The reason is not to "just argue", but to avoid misplaced animosity that will impede progress by provoking conflict rather rallying attention around solutions.