I'm pretty sure "rude" in this context means "brief and to the point", not insulting. Otherwise you can be rude with an LLM as well.

Most people I know are happy to receive a focused email rather than an LLM-enhanced, 6 paragraph wall of text.

But it's far less rude to just bluntly say something than to send an email generated by an LLM.

I think rude was the wrong word to use. I more meant lacking the pomp and circumstance fluff. I always appreciate considerate and polite speech and think it's requisite to being taken seriously. However, I think directness within the bounds of politeness is optimal.

Also, if it's wall-o-text or "staging must be updated before our os version is deprecated sunday" I prefer the latter.

Yeah that attitude will not get you far in life unless you're Steve Jobs, and it'll sink your ship unless you're obnoxiously rich. And even if you're either/both of those things: A. you can and should act better, and B. people will always attach an asshole-asterisk to your name for the rest of your life and probably even a good while after.