No coffe or saying it is a joke makes me happy for you to tell me what I am really saying, nor does it excuse it.
Come on, lighten up.
Firstly i didn't tell you what you said, i told you what i'm hearing.
This is actually a fundamental part of the communications cycle, something i teach from time to time. Basically you form a concept in your head, your brain then turns that to speech (or written words), and that is the first part where there can be a mismatch between what is meant and what is communication. Then the information is transmitted to another who reads those words (or hears them) and that is another point where things can breakdown due to the understanding of the words themselves by the other person. And then they process the overall meaning in their brains, and there can be yet another failure in communication.
Secondly, when someone types "So what i'm hearing" is often used in a humorous context to deliberately twist what was said. Now that you are aware of this, you can proceed with caution the next time you see someone use that phrase