The author doesn't seem to be that annoyed, they're just trying to make life easier for themselves and others. It's equally polite to say "Hello" and type the

The author doesn't seem to be that annoyed, they're just trying to make life easier for themselves and others. It's equally polite to say "Hello" and type the question in the same message. Do you genuinely not see how saying "Hello" first, which for many people forces them to lose concentration as they mentally prepare to be asked a question, is worse? The author provides multiple, equally polite examples that respect people's desire to politely greet others and respects the concentration of the receiver.