Comment by rfrey

I think words matter, because they convey an underlying attitude toward a person's work, and that attitude matters.

Consider an extreme: "You're an idiot, any competent person would have done X".

Obviously that would be rude, disrespectful, and arrogant. Nobody would say that, but it suggests there is a continuum of responses from "I do not respect your work at all" to "I respect your work but think you might have overlooked something". There's a line somewhere on that continuum (which is going to vary by person) that separates useful input from arrogant drive-by criticism.

If I want my suggestions to be taken seriously, I should take care that I'm on the right side of the line. Using the word "just" implies that your proposed solution is obvious and trivial, and will probably be on the far side of the line for lots of people.