If people would be able to actually formulate their question, a text based conversation would be quite more productive.
But as they usually don’t even really know what they want to know and only have a vague idea, they need to talk, so they can get down to the point of their original problem.

As a technician/sw dev this usually the problem, when managers call me.
They call, because they have a problem they don’t understand. If they would have a clue, I could give a short precise answer.
But because they lack the correct words or don’t even really know what the problem is, they want to talk, so they can hide their incompetence and guide the conversation to their actual problem.

Maybe I’m just really pissed after all those years of senseless calls.
To be fair, I sometimes also use calls, when I need fast answers. But then it either really is a fast call or I have a discussion about a problem, where I’m not exactly sure how to proceed and need a second opinion.
And that’s the point. I’m not sure on those cases on how to proceed and need a discussion. Just like the people calling me.
But their questions are usually none to be discussed, but only not well formulated, because they don’t know their shit.

I don’t have anything against colleagues calling me for help and I spent 30mins discussing possible approaches.
But being in the phone for something that would be much better handled per text, because my answer is maybe complex and then I need to send it out anyway, because my counterpart doesn’t understand it… This is just a waste of time, because of incompetence