I agree with you, although I think your example does perhaps display some missing social understanding, even if the intention was good-natured.

> the white balance is so poorly executed on this everyone looks like they're suffering from a severe case of jaundice. It's all I can focus on and it's not helping your film

It's a bit much right? There is a way to give strong negative feedback without sounding affected. You could have communicated the same thing with the slightly toned down: "The white balance is really poorly executed unfortunately. It's all I can focus on and it's not helping your film."

I liked the original article by the author as an example of giving negative feedback.