The problem is not with "Hi" or "Hello" immediately followed by the question. The problem is when people write "Hi"/"Hello" without the question, then waiting

The problem is not with "Hi" or "Hello" immediately followed by the question. The problem is when people write "Hi"/"Hello" without the question, then waiting for the reply, then want to simulate a smalltalk, and only then asking the question. In many cases they're not even thought about this question in advance, and didn't framed it or phrased it, to make it easier on the other side to understand the problem.