In this cases, shouldn't the discussion be purely about the technical merits of the idea, rather than emotions of the people speaking about it? I would count removing unneeded emotions from the conversation as a positive thing.
Emotion is a very powerful signal during discussion. It's a counterpoint to logic; they work together. Rarely does logic by itself win anyone over. Trying to remove "unneeded" (who decides what an unneeded emotion is) emotion is folly. We're not Vulcans.
That is not meritocracy and pretty bad workplace.