I think the point is that some of the extra words OP is complaining about aren't needless. It's on the writer to know their audience, but it's also asking a lot to tune a message in a PR review to the one particular person who demands bluntness, especially if they don't know that person well. If the majority of people in the organization respond positively to a certain style (which may involve some amount of phatic speech), then the person who is "over-writing" here is probably making a good decision.

Once I build rapport with someone, I tend to be more blunt, but still balance that with the fact that other people may be reading the interaction, and I don't want to model a rude communication style.

An organization can choose to promote a very direct approach to feedback (Bridgewater is famous for this), but it requires top-down work to get everyone on the same page, not just expecting one developer to mind-read another.