Sure, and in the above context they are less effective. So why would he care?
> he might calm down a little and learn one or two things about social interaction
Why? What purpose would that serve? The LKML is one of the last few places where politically correct bullshit does not prevail. Communication is efficient and effective. There is no evidence that changing the tone would make it more efficient and more effective, but there's evidence galore that the opposite would happen. Experience has thought me that the only people hurt in the process are technical morons, and such people have no place in a technical discussion.
If someone cares more about the language or social niceties than about the correctitude of technical solutions they have no place in a technical community.