Nothing wrong with showing emotions. Irritation is an emotion. There is a difference between showing emotion and throwing a tantrum. E.g., you might notice at no point have I demanded anybody's resignation or their groveling public apology.

The whole point of the article was a man's journey to understand Feynman's personal definitions of words, which were based on how he thought and understood problems. Knocking all the sharp corners from interpersonal communications means you value conformity over diversity of thought. That seems a poor tradeoff to me.