The thing that irritates me about people who just say "hi" is it wastes my time. I stop what I'm doing to read their message only to find out that I now need to

The thing that irritates me about people who just say "hi" is it wastes my time. I stop what I'm doing to read their message only to find out that I now need to wait for them to ask that question - which isn't always quick because if you've not replied to them right away then they're likely off doing something else themselves. So my workflow has been interrupted for no good reason. I now passively aggressively handle this by posting lyrics of songs that feature their greeting in, like "Hey Jude". It usually gets a laugh but also makes a subtle point that their "Hey" follow up comment was a little pointless. I don't mind if people post something like this though: <13:00:00> Hi, hows things? <13:00:30> Did you manage to get that report sent? In that instance it's still 30 seconds before the follow up but at least they open with something more conversational and they're not waiting for me to respond before getting to the point.