Comment by krisoft
> It opens a synchronous channel, setting social expectations for somewhat realtime responses.
But do you see how that is your choice? You can just type "hello", or a longer form of the same, and then go back to work. You can then check back in about an hour to see if they managed to describe what they are looking for.
You can always change yourself, while it is so much harder to change others that it is almost futile. The true source of your distress is not them saying hello, but your understanding of that social expectation of realtime responses.
> You can always change yourself, while it is so much harder to change others that it is almost futile.
This is a defeatist attitude.
Sure, there are some people who will refuse to change no matter what. But many—probably even most—people, if you explain that this is your preferred method of communication when they have a question for you to answer, will at least try to operate that way.